79307221593 has 4 divisors (see below), whose sum is σ = 105742962128. Its totient is φ = 52871481060.

The previous prime is 79307221583. The next prime is 79307221621. The reversal of 79307221593 is 39512270397.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 79307221593 - 2⁵ = 79307221561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79307221583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13217870263 + ... + 13217870268.

It is an arithmetic number, because the mean of its divisors is an integer number (26435740532).

Almost surely, 2^79307221593 is an apocalyptic number.

It is an amenable number.

79307221593 is a deficient number, since it is larger than the sum of its proper divisors (26435740535).

79307221593 is a wasteful number, since it uses less digits than its factorization.

79307221593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26435740534.

The product of its (nonzero) digits is 714420, while the sum is 48.

The spelling of 79307221593 in words is "seventy-nine billion, three hundred seven million, two hundred twenty-one thousand, five hundred ninety-three".