12877972769 has 4 divisors (see below), whose sum is σ = 12942686400. Its totient is φ = 12813259140.

The previous prime is 12877972763. The next prime is 12877972819. The reversal of 12877972769 is 96727977821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12877972769 is a prime.

It is a super-3 number, since 3×12877972769³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12877972763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32356517 + ... + 32356914.

It is an arithmetic number, because the mean of its divisors is an integer number (3235671600).

Almost surely, 2^12877972769 is an apocalyptic number.

It is an amenable number.

12877972769 is a deficient number, since it is larger than the sum of its proper divisors (64713631).

12877972769 is an equidigital number, since it uses as much as digits as its factorization.

12877972769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64713630.

The product of its digits is 37340352, while the sum is 65.

The spelling of 12877972769 in words is "twelve billion, eight hundred seventy-seven million, nine hundred seventy-two thousand, seven hundred sixty-nine".