79669115220 has 24 divisors (see below), whose sum is σ = 223073522784. Its totient is φ = 21245097376.

The previous prime is 79669115161. The next prime is 79669115263. The reversal of 79669115220 is 2251196697.

It is a self number, because there is not a number n which added to its sum of digits gives 79669115220.

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, 663909234 + ... + 663909353.

It is an arithmetic number, because the mean of its divisors is an integer number (9294730116).

Almost surely, 2^79669115220 is an apocalyptic number.

It is an amenable number.

79669115220 is an abundant number, since it is smaller than the sum of its proper divisors (143404407564).

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

79669115220 is a wasteful number, since it uses less digits than its factorization.

79669115220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327818599 (or 1327818597 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 79669115220 in words is "seventy-nine billion, six hundred sixty-nine million, one hundred fifteen thousand, two hundred twenty".