12796261997 has 4 divisors (see below), whose sum is σ = 12882143100. Its totient is φ = 12710380896.

The previous prime is 12796261967. The next prime is 12796262029. The reversal of 12796261997 is 79916269721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2872316836 + 9923945161 = 53594^2 + 99619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12796261997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12796261927) 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 in 3 ways as a sum of consecutive naturals, for example, 42940328 + ... + 42940625.

It is an arithmetic number, because the mean of its divisors is an integer number (3220535775).

Almost surely, 2^12796261997 is an apocalyptic number.

It is an amenable number.

12796261997 is a deficient number, since it is larger than the sum of its proper divisors (85881103).

12796261997 is an equidigital number, since it uses as much as digits as its factorization.

12796261997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85881102.

The product of its digits is 5143824, while the sum is 59.

The spelling of 12796261997 in words is "twelve billion, seven hundred ninety-six million, two hundred sixty-one thousand, nine hundred ninety-seven".