79920718770 has 32 divisors (see below), whose sum is σ = 195428780352. Its totient is φ = 20910074432.

The previous prime is 79920718763. The next prime is 79920718847. The reversal of 79920718770 is 7781702997.

It is a self number, because there is not a number n which added to its sum of digits gives 79920718770.

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 15 ways as a sum of consecutive naturals, for example, 25130712 + ... + 25133891.

It is an arithmetic number, because the mean of its divisors is an integer number (6107149386).

Almost surely, 2^79920718770 is an apocalyptic number.

79920718770 is an abundant number, since it is smaller than the sum of its proper divisors (115508061582).

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

79920718770 is a wasteful number, since it uses less digits than its factorization.

79920718770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50264666.

The product of its (nonzero) digits is 3111696, while the sum is 57.

The spelling of 79920718770 in words is "seventy-nine billion, nine hundred twenty million, seven hundred eighteen thousand, seven hundred seventy".