80513256915 has 192 divisors, whose sum is σ = 176688884736. Its totient is φ = 33012734976.

The previous prime is 80513256911. The next prime is 80513256917. The reversal of 80513256915 is 51965231508.

80513256915 is a `hidden beast` number, since 8 + 0 + 51 + 32 + 569 + 1 + 5 = 666.

It is not a de Polignac number, because 80513256915 - 2² = 80513256911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (80513256911) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 23221012 + ... + 23224478.

It is an arithmetic number, because the mean of its divisors is an integer number (920254608).

Almost surely, 2^80513256915 is an apocalyptic number.

80513256915 is an abundant number, since it is smaller than the sum of its proper divisors (96175627821).

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

80513256915 is a wasteful number, since it uses less digits than its factorization.

80513256915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658 (or 3655 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 80513256915 in words is "eighty billion, five hundred thirteen million, two hundred fifty-six thousand, nine hundred fifteen".