80876535912 has 160 divisors (see below), whose sum is σ = 229058445000. Its totient is φ = 26658865152.

The previous prime is 80876535899. The next prime is 80876535919. The reversal of 80876535912 is 21953567808.

It can be written as a sum of positive squares in 4 ways, for example, as 62393045796 + 18483490116 = 249786^2 + 135954^2 .

It is a super-2 number, since 2×80876535912² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (80876535919) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 54315264 + ... + 54316752.

Almost surely, 2^80876535912 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 80876535912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114529222500).

80876535912 is an abundant number, since it is smaller than the sum of its proper divisors (148181909088).

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

80876535912 is a wasteful number, since it uses less digits than its factorization.

80876535912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385 (or 2372 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The spelling of 80876535912 in words is "eighty billion, eight hundred seventy-six million, five hundred thirty-five thousand, nine hundred twelve".