78787300872 has 64 divisors (see below), whose sum is σ = 225599368320. Its totient is φ = 22461378048.

The previous prime is 78787300871. The next prime is 78787300903. The reversal of 78787300872 is 27800378787.

It is not an unprimeable number, because it can be changed into a prime (78787300871) 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, 436323 + ... + 589874.

It is an arithmetic number, because the mean of its divisors is an integer number (3524990130).

Almost surely, 2^78787300872 is an apocalyptic number.

It is an amenable number.

78787300872 is an abundant number, since it is smaller than the sum of its proper divisors (146812067448).

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

78787300872 is a wasteful number, since it uses less digits than its factorization.

78787300872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026670 (or 1026666 counting only the distinct ones).

The product of its (nonzero) digits is 7375872, while the sum is 57.

The spelling of 78787300872 in words is "seventy-eight billion, seven hundred eighty-seven million, three hundred thousand, eight hundred seventy-two".