12677663878 has 32 divisors (see below), whose sum is σ = 22047409440. Its totient is φ = 5403394560.

The previous prime is 12677663857. The next prime is 12677663891. The reversal of 12677663878 is 87836677621.

It is a happy number.

It is a super-2 number, since 2×12677663878² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 37600 + ... + 163612.

It is an arithmetic number, because the mean of its divisors is an integer number (688981545).

Almost surely, 2^12677663878 is an apocalyptic number.

12677663878 is a deficient number, since it is larger than the sum of its proper divisors (9369745562).

12677663878 is a wasteful number, since it uses less digits than its factorization.

12677663878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126312.

The product of its digits is 28449792, while the sum is 61.

The spelling of 12677663878 in words is "twelve billion, six hundred seventy-seven million, six hundred sixty-three thousand, eight hundred seventy-eight".