79136872319 has 24 divisors (see below), whose sum is σ = 83329490160. Its totient is φ = 75089244672.

The previous prime is 79136872301. The next prime is 79136872361. The reversal of 79136872319 is 91327863197.

It is not a de Polignac number, because 79136872319 - 2¹⁶ = 79136806783 is a prime.

It is a super-2 number, since 2×79136872319² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79136874319) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19164047 + ... + 19168175.

It is an arithmetic number, because the mean of its divisors is an integer number (3472062090).

Almost surely, 2^79136872319 is an apocalyptic number.

79136872319 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

79136872319 is a deficient number, since it is larger than the sum of its proper divisors (4192617841).

79136872319 is an equidigital number, since it uses as much as digits as its factorization.

79136872319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4407 (or 4328 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 56.

The spelling of 79136872319 in words is "seventy-nine billion, one hundred thirty-six million, eight hundred seventy-two thousand, three hundred nineteen".