78624806624 has 48 divisors (see below), whose sum is σ = 190513961568. Its totient is φ = 31104317952.

The previous prime is 78624806597. The next prime is 78624806647. The reversal of 78624806624 is 42660842687.

It is a super-2 number, since 2×78624806624² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13497227 + ... + 13503050.

It is an arithmetic number, because the mean of its divisors is an integer number (3969040866).

Almost surely, 2^78624806624 is an apocalyptic number.

It is an amenable number.

78624806624 is an abundant number, since it is smaller than the sum of its proper divisors (111889154944).

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

78624806624 is a wasteful number, since it uses less digits than its factorization.

78624806624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27000307 (or 27000299 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 53.

The spelling of 78624806624 in words is "seventy-eight billion, six hundred twenty-four million, eight hundred six thousand, six hundred twenty-four".