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80885012688 = 24323752329027
BaseRepresentation
bin100101101010100011…
…1110101100011010000
321201210000102101011200
41023111013311203100
52311123030401223
6101054050311200
75562256156344
oct1132507654320
9251700371150
1080885012688
1131337532227
1213814288500
1378205b186c
143cb4513624
152186039a43
hex12d51f58d0

80885012688 has 120 divisors (see below), whose sum is σ = 232936231008. Its totient is φ = 26181916416.

The previous prime is 80885012687. The next prime is 80885012753. The reversal of 80885012688 is 88621058808.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80885012687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2772031 + ... + 2801057.

Almost surely, 280885012688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80885012688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116468115504).

80885012688 is an abundant number, since it is smaller than the sum of its proper divisors (152051218320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80885012688 is a wasteful number, since it uses less digits than its factorization.

80885012688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29601 (or 29592 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 54.

The spelling of 80885012688 in words is "eighty billion, eight hundred eighty-five million, twelve thousand, six hundred eighty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 37 48 72 74 111 144 148 222 296 333 444 523 592 666 888 1046 1332 1569 1776 2092 2664 3138 4184 4707 5328 6276 8368 9414 12552 18828 19351 25104 29027 37656 38702 58053 58054 75312 77404 87081 116106 116108 154808 174159 174162 232212 232216 261243 309616 348318 348324 464424 464432 522486 696636 696648 928848 1044972 1073999 1393272 1393296 2089944 2147998 2786544 3221997 4179888 4295996 6443994 8591992 9665991 12887988 15181121 17183984 19331982 25775976 30362242 38663964 45543363 51551952 60724484 77327928 91086726 121448968 136630089 154655856 182173452 242897936 273260178 364346904 546520356 561701477 728693808 1093040712 1123402954 1685104431 2186081424 2246805908 3370208862 4493611816 5055313293 6740417724 8987223632 10110626586 13480835448 20221253172 26961670896 40442506344 80885012688