79031721594 has 64 divisors (see below), whose sum is σ = 188182241280. Its totient is φ = 21651572160.

The previous prime is 79031721589. The next prime is 79031721619. The reversal of 79031721594 is 49512713097.

It is a super-2 number, since 2×79031721594² (a number of 23 digits) contains 22 as substring.

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, 136524 + ... + 420359.

It is an arithmetic number, because the mean of its divisors is an integer number (2940347520).

Almost surely, 2^79031721594 is an apocalyptic number.

79031721594 is an abundant number, since it is smaller than the sum of its proper divisors (109150519686).

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

79031721594 is a wasteful number, since it uses less digits than its factorization.

79031721594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557035.

The product of its (nonzero) digits is 476280, while the sum is 48.

The spelling of 79031721594 in words is "seventy-nine billion, thirty-one million, seven hundred twenty-one thousand, five hundred ninety-four".