12877774145 has 16 divisors (see below), whose sum is σ = 15675819600. Its totient is φ = 10154087424.

The previous prime is 12877774079. The next prime is 12877774177. The reversal of 12877774145 is 54147777821.

It can be written as a sum of positive squares in 8 ways, for example, as 165662641 + 12712111504 = 12871^2 + 112748^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12877774145 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553997 + ... + 576773.

It is an arithmetic number, because the mean of its divisors is an integer number (979738725).

Almost surely, 2^12877774145 is an apocalyptic number.

It is an amenable number.

12877774145 is a deficient number, since it is larger than the sum of its proper divisors (2798045455).

12877774145 is a wasteful number, since it uses less digits than its factorization.

12877774145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24404.

The product of its digits is 3073280, while the sum is 53.

The spelling of 12877774145 in words is "twelve billion, eight hundred seventy-seven million, seven hundred seventy-four thousand, one hundred forty-five".