79522020864 has 1200 divisors, whose sum is σ = 298707194016. Its totient is φ = 20875345920.

The previous prime is 79522020839. The next prime is 79522020923. The reversal of 79522020864 is 46802022597.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1500415462 + ... + 1500415514.

Almost surely, 2^79522020864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79522020864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149353597008).

79522020864 is an abundant number, since it is smaller than the sum of its proper divisors (219185173152).

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

79522020864 is a wasteful number, since it uses less digits than its factorization.

79522020864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 105 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 79522020864 in words is "seventy-nine billion, five hundred twenty-two million, twenty thousand, eight hundred sixty-four".