79549890870 has 16 divisors (see below), whose sum is σ = 190919738160. Its totient is φ = 21213304224.

The previous prime is 79549890869. The next prime is 79549890883. The reversal of 79549890870 is 7809894597.

It is a congruent number.

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, 1325831485 + ... + 1325831544.

It is an arithmetic number, because the mean of its divisors is an integer number (11932483635).

Almost surely, 2^79549890870 is an apocalyptic number.

79549890870 is an abundant number, since it is smaller than the sum of its proper divisors (111369847290).

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

79549890870 is a wasteful number, since it uses less digits than its factorization.

79549890870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651663039.

The product of its (nonzero) digits is 45722880, while the sum is 66.

The spelling of 79549890870 in words is "seventy-nine billion, five hundred forty-nine million, eight hundred ninety thousand, eight hundred seventy".