12677205138 has 32 divisors (see below), whose sum is σ = 27336031296. Its totient is φ = 3896209728.

The previous prime is 12677205119. The next prime is 12677205157. The reversal of 12677205138 is 83150277621.

It is an interprime number because it is at equal distance from previous prime (12677205119) and next prime (12677205157).

It is a super-2 number, since 2×12677205138² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12677205138.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24256 + ... + 161067.

It is an arithmetic number, because the mean of its divisors is an integer number (854250978).

Almost surely, 2^12677205138 is an apocalyptic number.

12677205138 is an abundant number, since it is smaller than the sum of its proper divisors (14658826158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12677205138 is a wasteful number, since it uses less digits than its factorization.

12677205138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186218.

The product of its (nonzero) digits is 141120, while the sum is 42.

The spelling of 12677205138 in words is "twelve billion, six hundred seventy-seven million, two hundred five thousand, one hundred thirty-eight".