78724502922 has 16 divisors (see below), whose sum is σ = 169560468000. Its totient is φ = 24222923952.

The previous prime is 78724502863. The next prime is 78724502933. The reversal of 78724502922 is 22920542787.

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, 504644172 + ... + 504644327.

It is an arithmetic number, because the mean of its divisors is an integer number (10597529250).

Almost surely, 2^78724502922 is an apocalyptic number.

78724502922 is an abundant number, since it is smaller than the sum of its proper divisors (90835965078).

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

78724502922 is a wasteful number, since it uses less digits than its factorization.

78724502922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009288517.

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 78724502922 in words is "seventy-eight billion, seven hundred twenty-four million, five hundred two thousand, nine hundred twenty-two".