79751800980 has 72 divisors (see below), whose sum is σ = 242111305800. Its totient is φ = 21249783552.

The previous prime is 79751800979. The next prime is 79751801011. The reversal of 79751800980 is 8900815797.

It can be written as a sum of positive squares in 4 ways, for example, as 14094913284 + 65656887696 = 118722^2 + 256236^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40966 + ... + 401474.

It is an arithmetic number, because the mean of its divisors is an integer number (3362657025).

Almost surely, 2^79751800980 is an apocalyptic number.

It is an amenable number.

79751800980 is an abundant number, since it is smaller than the sum of its proper divisors (162359504820).

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

79751800980 is a wasteful number, since it uses less digits than its factorization.

79751800980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361753 (or 361748 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 54.

The spelling of 79751800980 in words is "seventy-nine billion, seven hundred fifty-one million, eight hundred thousand, nine hundred eighty".