79960839953 has 2 divisors, whose sum is σ = 79960839954. Its totient is φ = 79960839952.

The previous prime is 79960839943. The next prime is 79960839967. The reversal of 79960839953 is 35993806997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79443368449 + 517471504 = 281857^2 + 22748^2 .

It is a cyclic number.

It is not a de Polignac number, because 79960839953 - 2²⁶ = 79893731089 is a prime.

It is not a weakly prime, because it can be changed into another prime (79960839943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39980419976 + 39980419977.

It is an arithmetic number, because the mean of its divisors is an integer number (39980419977).

Almost surely, 2^79960839953 is an apocalyptic number.

It is an amenable number.

79960839953 is a deficient number, since it is larger than the sum of its proper divisors (1).

79960839953 is an equidigital number, since it uses as much as digits as its factorization.

79960839953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 99202320, while the sum is 68.

The spelling of 79960839953 in words is "seventy-nine billion, nine hundred sixty million, eight hundred thirty-nine thousand, nine hundred fifty-three".