79157388645 has 32 divisors (see below), whose sum is σ = 143109417600. Its totient is φ = 41501722752.

The previous prime is 79157388623. The next prime is 79157388679. The reversal of 79157388645 is 54688375197.

It is not a de Polignac number, because 79157388645 - 2⁸ = 79157388389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4961112 + ... + 4977041.

It is an arithmetic number, because the mean of its divisors is an integer number (4472169300).

Almost surely, 2^79157388645 is an apocalyptic number.

It is an amenable number.

79157388645 is a deficient number, since it is larger than the sum of its proper divisors (63952028955).

79157388645 is a wasteful number, since it uses less digits than its factorization.

79157388645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9938226 (or 9938220 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 63.

The spelling of 79157388645 in words is "seventy-nine billion, one hundred fifty-seven million, three hundred eighty-eight thousand, six hundred forty-five".