79136872361 has 2 divisors, whose sum is σ = 79136872362. Its totient is φ = 79136872360.

The previous prime is 79136872301. The next prime is 79136872391. The reversal of 79136872361 is 16327863197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71203585600 + 7933286761 = 266840^2 + 89069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79136872361 is a prime.

It is not a weakly prime, because it can be changed into another prime (79136872301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39568436180 + 39568436181.

It is an arithmetic number, because the mean of its divisors is an integer number (39568436181).

Almost surely, 2^79136872361 is an apocalyptic number.

It is an amenable number.

79136872361 is a deficient number, since it is larger than the sum of its proper divisors (1).

79136872361 is an equidigital number, since it uses as much as digits as its factorization.

79136872361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 53.

The spelling of 79136872361 in words is "seventy-nine billion, one hundred thirty-six million, eight hundred seventy-two thousand, three hundred sixty-one".