79912822004 has 24 divisors (see below), whose sum is σ = 141151746120. Its totient is φ = 39583862784.

The previous prime is 79912821869. The next prime is 79912822079. The reversal of 79912822004 is 40022821997.

It can be written as a sum of positive squares in 4 ways, for example, as 23454309904 + 56458512100 = 153148^2 + 237610^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4784612 + ... + 4801284.

It is an arithmetic number, because the mean of its divisors is an integer number (5881322755).

Almost surely, 2^79912822004 is an apocalyptic number.

It is an amenable number.

79912822004 is a deficient number, since it is larger than the sum of its proper divisors (61238924116).

79912822004 is a wasteful number, since it uses less digits than its factorization.

79912822004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27779 (or 27777 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 79912822004 in words is "seventy-nine billion, nine hundred twelve million, eight hundred twenty-two thousand, four".