12951997937 has 2 divisors, whose sum is σ = 12951997938. Its totient is φ = 12951997936.

The previous prime is 12951997931. The next prime is 12951997967. The reversal of 12951997937 is 73979915921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10285205056 + 2666792881 = 101416^2 + 51641^2 .

It is a cyclic number.

It is not a de Polignac number, because 12951997937 - 2¹⁰ = 12951996913 is a prime.

It is a super-3 number, since 3×12951997937³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12951997937.

It is not a weakly prime, because it can be changed into another prime (12951997931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6475998968 + 6475998969.

It is an arithmetic number, because the mean of its divisors is an integer number (6475998969).

Almost surely, 2^12951997937 is an apocalyptic number.

It is an amenable number.

12951997937 is a deficient number, since it is larger than the sum of its proper divisors (1).

12951997937 is an equidigital number, since it uses as much as digits as its factorization.

12951997937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9644670, while the sum is 62.

The spelling of 12951997937 in words is "twelve billion, nine hundred fifty-one million, nine hundred ninety-seven thousand, nine hundred thirty-seven".