12777116667 has 32 divisors (see below), whose sum is σ = 19931212800. Its totient is φ = 7277699520.

The previous prime is 12777116659. The next prime is 12777116687. The reversal of 12777116667 is 76661177721.

It is not a de Polignac number, because 12777116667 - 2³ = 12777116659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12777116647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302242 + ... + 341912.

It is an arithmetic number, because the mean of its divisors is an integer number (622850400).

Almost surely, 2^12777116667 is an apocalyptic number.

12777116667 is a deficient number, since it is larger than the sum of its proper divisors (7154096133).

12777116667 is an equidigital number, since it uses as much as digits as its factorization.

12777116667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40008 (or 39994 counting only the distinct ones).

The product of its digits is 1037232, while the sum is 51.

The spelling of 12777116667 in words is "twelve billion, seven hundred seventy-seven million, one hundred sixteen thousand, six hundred sixty-seven".