79809049560 has 128 divisors (see below), whose sum is σ = 240356160000. Its totient is φ = 21200019456.

The previous prime is 79809049553. The next prime is 79809049577. The reversal of 79809049560 is 6594090897.

It is a self number, because there is not a number n which added to its sum of digits gives 79809049560.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60506581 + ... + 60507899.

It is an arithmetic number, because the mean of its divisors is an integer number (1877782500).

Almost surely, 2^79809049560 is an apocalyptic number.

It is an amenable number.

79809049560 is an abundant number, since it is smaller than the sum of its proper divisors (160547110440).

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

79809049560 is a wasteful number, since it uses less digits than its factorization.

79809049560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905 (or 2901 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 57.

The spelling of 79809049560 in words is "seventy-nine billion, eight hundred nine million, forty-nine thousand, five hundred sixty".