78555476924 has 12 divisors (see below), whose sum is σ = 138461093400. Its totient is φ = 38995164528.

The previous prime is 78555476911. The next prime is 78555476929. The reversal of 78555476924 is 42967455587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78555476929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70642859 + ... + 70643970.

It is an arithmetic number, because the mean of its divisors is an integer number (11538424450).

Almost surely, 2^78555476924 is an apocalyptic number.

It is an amenable number.

78555476924 is a deficient number, since it is larger than the sum of its proper divisors (59905616476).

78555476924 is a wasteful number, since it uses less digits than its factorization.

78555476924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141286972 (or 141286970 counting only the distinct ones).

The product of its digits is 84672000, while the sum is 62.

The spelling of 78555476924 in words is "seventy-eight billion, five hundred fifty-five million, four hundred seventy-six thousand, nine hundred twenty-four".