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79081395952 = 24132933738903
BaseRepresentation
bin100100110100110011…
…1100101011011110000
321120010022121011010211
41021221213211123300
52243424314132302
6100155100433504
75466465526456
oct1115147453360
9246108534124
1079081395952
11305a1428289
12133b0248894
1375c3a26520
143b82b789d6
1520cca19ad7
hex12699e56f0

79081395952 has 80 divisors (see below), whose sum is σ = 171207167040. Its totient is φ = 35135041536.

The previous prime is 79081395919. The next prime is 79081395959. The reversal of 79081395952 is 25959318097.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79081395959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2013333 + ... + 2052235.

It is an arithmetic number, because the mean of its divisors is an integer number (2140089588).

Almost surely, 279081395952 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 79081395952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85603583520).

79081395952 is an abundant number, since it is smaller than the sum of its proper divisors (92125771088).

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

79081395952 is a wasteful number, since it uses less digits than its factorization.

79081395952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39290 (or 39284 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 58.

The spelling of 79081395952 in words is "seventy-nine billion, eighty-one million, three hundred ninety-five thousand, nine hundred fifty-two".

Divisors: 1 2 4 8 13 16 26 29 52 58 104 116 208 232 337 377 464 674 754 1348 1508 2696 3016 4381 5392 6032 8762 9773 17524 19546 35048 38903 39092 70096 77806 78184 127049 155612 156368 254098 311224 505739 508196 622448 1011478 1016392 1128187 2022956 2032784 2256374 4045912 4512748 8091824 9025496 13110311 14666431 18050992 26220622 29332862 52441244 58665724 104882488 117331448 170434043 209764976 234662896 340868086 380199019 681736172 760398038 1363472344 1520796076 2726944688 3041592152 4942587247 6083184304 9885174494 19770348988 39540697976 79081395952