79901037032644 has 81 divisors (see below), whose sum is σ = 145580921312589. Its totient is φ = 38370784288320.

The previous prime is 79901037032591. The next prime is 79901037032669. The reversal of 79901037032644 is 44623073010997.

The square root of 79901037032644 is 8938738.

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

It can be written as a sum of positive squares in only one way, i.e., 3850079714244 + 76050957318400 = 1962162^2 + 8720720^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 49109425759 + ... + 49109427385.

Almost surely, 2^{79901037032644} is an apocalyptic number.

79901037032644 is the 8938738-th square number.

It is an amenable number.

79901037032644 is a deficient number, since it is larger than the sum of its proper divisors (65679884279945).

79901037032644 is an frugal number, since it uses more digits than its factorization.

79901037032644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3474 (or 1737 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 55.

The spelling of 79901037032644 in words is "seventy-nine trillion, nine hundred one billion, thirty-seven million, thirty-two thousand, six hundred forty-four".