12877937361 has 33 divisors (see below), whose sum is σ = 19358249161. Its totient is φ = 8566907652.

The previous prime is 12877937351. The next prime is 12877937389. The reversal of 12877937361 is 16373977821.

The square root of 12877937361 is 113481.

It is a perfect power (a square), and thus also a powerful number.

12877937361 is a `hidden beast` number, since 128 + 77 + 93 + 7 + 361 = 666.

It is not a de Polignac number, because 12877937361 - 2¹⁵ = 12877904593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12877937298 and 12877937307.

It is not an unprimeable number, because it can be changed into a prime (12877937341) by changing a digit.

It is a polite number, since it can be written in 32 ways as a sum of consecutive naturals, for example, 27575650 + ... + 27576116.

Almost surely, 2^12877937361 is an apocalyptic number.

12877937361 is the 113481-st square number.

12877937361 is the 56741-st centered octagonal number.

It is an amenable number.

12877937361 is a deficient number, since it is larger than the sum of its proper divisors (6480311800).

12877937361 is an frugal number, since it uses more digits than its factorization.

12877937361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964 (or 470 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 54.

The spelling of 12877937361 in words is "twelve billion, eight hundred seventy-seven million, nine hundred thirty-seven thousand, three hundred sixty-one".