79964846957 has 2 divisors, whose sum is σ = 79964846958. Its totient is φ = 79964846956.

The previous prime is 79964846947. The next prime is 79964847019. The reversal of 79964846957 is 75964846997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75795045481 + 4169801476 = 275309^2 + 64574^2 .

It is a cyclic number.

It is not a de Polignac number, because 79964846957 - 2²⁴ = 79948069741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79964846917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39982423478 + 39982423479.

It is an arithmetic number, because the mean of its divisors is an integer number (39982423479).

Almost surely, 2^79964846957 is an apocalyptic number.

It is an amenable number.

79964846957 is a deficient number, since it is larger than the sum of its proper divisors (1).

79964846957 is an equidigital number, since it uses as much as digits as its factorization.

79964846957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 823011840, while the sum is 74.

The spelling of 79964846957 in words is "seventy-nine billion, nine hundred sixty-four million, eight hundred forty-six thousand, nine hundred fifty-seven".