79026648638 has 16 divisors (see below), whose sum is σ = 135595565664. Its totient is φ = 33838236000.

The previous prime is 79026648611. The next prime is 79026648671. The reversal of 79026648638 is 83684662097.

It is a super-2 number, since 2×79026648638² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2511113 + ... + 2542388.

It is an arithmetic number, because the mean of its divisors is an integer number (8474722854).

Almost surely, 2^79026648638 is an apocalyptic number.

79026648638 is a deficient number, since it is larger than the sum of its proper divisors (56568917026).

79026648638 is a wasteful number, since it uses less digits than its factorization.

79026648638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5054627.

The product of its (nonzero) digits is 20901888, while the sum is 59.

The spelling of 79026648638 in words is "seventy-nine billion, twenty-six million, six hundred forty-eight thousand, six hundred thirty-eight".