12931977377 has 4 divisors (see below), whose sum is σ = 14107611696. Its totient is φ = 11756343060.

The previous prime is 12931977371. The next prime is 12931977379. The reversal of 12931977377 is 77377913921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12931977377 - 2⁶ = 12931977313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12931977371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587817143 + ... + 587817164.

It is an arithmetic number, because the mean of its divisors is an integer number (3526902924).

Almost surely, 2^12931977377 is an apocalyptic number.

It is an amenable number.

12931977377 is a deficient number, since it is larger than the sum of its proper divisors (1175634319).

12931977377 is a wasteful number, since it uses less digits than its factorization.

12931977377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175634318.

The product of its digits is 3500658, while the sum is 56.

The spelling of 12931977377 in words is "twelve billion, nine hundred thirty-one million, nine hundred seventy-seven thousand, three hundred seventy-seven".