79720076532100 has 27 divisors (see below), whose sum is σ = 172992759825711. Its totient is φ = 31887994898400.

The previous prime is 79720076532043. The next prime is 79720076532119. The reversal of 79720076532100 is 123567002797.

The square root of 79720076532100 is 8928610.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 36957475098756 + 42762601433344 = 6079266^2 + 6539312^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 88839670 + ... + 89732530.

Almost surely, 2^{79720076532100} is an apocalyptic number.

79720076532100 is the 8928610-th square number.

It is an amenable number.

79720076532100 is an abundant number, since it is smaller than the sum of its proper divisors (93272683293611).

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

79720076532100 is an frugal number, since it uses more digits than its factorization.

79720076532100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785736 (or 892868 counting only the distinct ones).

The product of its (nonzero) digits is 1111320, while the sum is 49.

The spelling of 79720076532100 in words is "seventy-nine trillion, seven hundred twenty billion, seventy-six million, five hundred thirty-two thousand, one hundred".