78807256572 has 24 divisors (see below), whose sum is σ = 200600289792. Its totient is φ = 23880986800.

The previous prime is 78807256547. The next prime is 78807256573. The reversal of 78807256572 is 27565270887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78807256573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298512204 + ... + 298512467.

It is an arithmetic number, because the mean of its divisors is an integer number (8358345408).

Almost surely, 2^78807256572 is an apocalyptic number.

It is an amenable number.

78807256572 is an abundant number, since it is smaller than the sum of its proper divisors (121793033220).

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

78807256572 is a wasteful number, since it uses less digits than its factorization.

78807256572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597024689 (or 597024687 counting only the distinct ones).

The product of its (nonzero) digits is 13171200, while the sum is 57.

The spelling of 78807256572 in words is "seventy-eight billion, eight hundred seven million, two hundred fifty-six thousand, five hundred seventy-two".