79144370520 has 64 divisors (see below), whose sum is σ = 237453707520. Its totient is φ = 21103334784.

The previous prime is 79144370497. The next prime is 79144370521. The reversal of 79144370520 is 2507344197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79144370521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1900239 + ... + 1941441.

It is an arithmetic number, because the mean of its divisors is an integer number (3710214180).

Almost surely, 2^79144370520 is an apocalyptic number.

It is an amenable number.

79144370520 is an abundant number, since it is smaller than the sum of its proper divisors (158309337000).

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

79144370520 is a wasteful number, since it uses less digits than its factorization.

79144370520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57224 (or 57220 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 79144370520 in words is "seventy-nine billion, one hundred forty-four million, three hundred seventy thousand, five hundred twenty".