12997764707938 has 16 divisors (see below), whose sum is σ = 19871600715576. Its totient is φ = 6373985363200.

The previous prime is 12997764707929. The next prime is 12997764707947. The reversal of 12997764707938 is 83970746779921.

It is an interprime number because it is at equal distance from previous prime (12997764707929) and next prime (12997764707947).

It can be written as a sum of positive squares in 4 ways, for example, as 12960626407569 + 37138300369 = 3600087^2 + 192713^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 21591781 + ... + 22185592.

Almost surely, 2^{12997764707938} is an apocalyptic number.

12997764707938 is a deficient number, since it is larger than the sum of its proper divisors (6873836007638).

12997764707938 is a wasteful number, since it uses less digits than its factorization.

12997764707938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43780229.

The product of its (nonzero) digits is 2016379008, while the sum is 79.

The spelling of 12997764707938 in words is "twelve trillion, nine hundred ninety-seven billion, seven hundred sixty-four million, seven hundred seven thousand, nine hundred thirty-eight".