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80872526688 = 2533379832543
BaseRepresentation
bin100101101010001100…
…0001101001101100000
321201202010221000121020
41023110120031031200
52311111331323223
6101052522525440
75562045064122
oct1132430151540
9251663830536
1080872526688
1131330484318
1213810066880
13781ab2c5b5
143cb29c3212
152184dc01e3
hex12d460d360

80872526688 has 96 divisors (see below), whose sum is σ = 213220740096. Its totient is φ = 26839615488.

The previous prime is 80872526681. The next prime is 80872526689. The reversal of 80872526688 is 88662527808.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (60) 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 (80872526681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31800745 + ... + 31803287.

It is an arithmetic number, because the mean of its divisors is an integer number (2221049376).

Almost surely, 280872526688 is an apocalyptic number.

It is an amenable number.

80872526688 is an abundant number, since it is smaller than the sum of its proper divisors (132348213408).

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

80872526688 is a wasteful number, since it uses less digits than its factorization.

80872526688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876 (or 3868 counting only the distinct ones).

The product of its (nonzero) digits is 20643840, while the sum is 60.

The spelling of 80872526688 in words is "eighty billion, eight hundred seventy-two million, five hundred twenty-six thousand, six hundred eighty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 337 674 983 1011 1348 1966 2022 2543 2696 2949 3932 4044 5086 5392 5898 7629 7864 8088 10172 10784 11796 15258 15728 16176 20344 23592 30516 31456 32352 40688 47184 61032 81376 94368 122064 244128 331271 662542 856991 993813 1325084 1713982 1987626 2499769 2570973 2650168 3427964 3975252 4999538 5141946 5300336 6855928 7499307 7950504 9999076 10283892 10600672 13711856 14998614 15901008 19998152 20567784 27423712 29997228 31802016 39996304 41135568 59994456 79992608 82271136 119988912 239977824 842422153 1684844306 2527266459 3369688612 5054532918 6739377224 10109065836 13478754448 20218131672 26957508896 40436263344 80872526688