12997232957 has 2 divisors, whose sum is σ = 12997232958. Its totient is φ = 12997232956.

The previous prime is 12997232939. The next prime is 12997232999. The reversal of 12997232957 is 75923279921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10793963236 + 2203269721 = 103894^2 + 46939^2 .

It is an emirp because it is prime and its reverse (75923279921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12997232957 - 2⁶ = 12997232893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12997238957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6498616478 + 6498616479.

It is an arithmetic number, because the mean of its divisors is an integer number (6498616479).

Almost surely, 2^12997232957 is an apocalyptic number.

It is an amenable number.

12997232957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12997232957 is an equidigital number, since it uses as much as digits as its factorization.

12997232957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4286520, while the sum is 56.

The spelling of 12997232957 in words is "twelve billion, nine hundred ninety-seven million, two hundred thirty-two thousand, nine hundred fifty-seven".