12799999957 has 2 divisors, whose sum is σ = 12799999958. Its totient is φ = 12799999956.

The previous prime is 12799999921. The next prime is 12799999981. The reversal of 12799999957 is 75999999721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8970741796 + 3829258161 = 94714^2 + 61881^2 .

It is a cyclic number.

It is not a de Polignac number, because 12799999957 - 2¹¹ = 12799997909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12739999957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6399999978 + 6399999979.

It is an arithmetic number, because the mean of its divisors is an integer number (6399999979).

Almost surely, 2^12799999957 is an apocalyptic number.

It is an amenable number.

12799999957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12799999957 is an equidigital number, since it uses as much as digits as its factorization.

12799999957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 260406090, while the sum is 76.

The spelling of 12799999957 in words is "twelve billion, seven hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty-seven".