12516977077 has 16 divisors (see below), whose sum is σ = 13706100864. Its totient is φ = 11336472000.

The previous prime is 12516977059. The next prime is 12516977093. The reversal of 12516977077 is 77077961521.

It is a cyclic number.

It is not a de Polignac number, because 12516977077 - 2²⁷ = 12382759349 is a prime.

It is a super-2 number, since 2×12516977077² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12516977677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4615752 + ... + 4618462.

It is an arithmetic number, because the mean of its divisors is an integer number (856631304).

Almost surely, 2^12516977077 is an apocalyptic number.

It is an amenable number.

12516977077 is a deficient number, since it is larger than the sum of its proper divisors (1189123787).

12516977077 is a wasteful number, since it uses less digits than its factorization.

12516977077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4140.

The product of its (nonzero) digits is 1296540, while the sum is 52.

The spelling of 12516977077 in words is "twelve billion, five hundred sixteen million, nine hundred seventy-seven thousand, seventy-seven".