12977316636 has 24 divisors (see below), whose sum is σ = 30327515904. Its totient is φ = 4319042160.

The previous prime is 12977316577. The next prime is 12977316637. The reversal of 12977316636 is 63661377921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12977316637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833220 + ... + 848651.

It is an arithmetic number, because the mean of its divisors is an integer number (1263646496).

Almost surely, 2^12977316636 is an apocalyptic number.

It is an amenable number.

12977316636 is an abundant number, since it is smaller than the sum of its proper divisors (17350199268).

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

12977316636 is a wasteful number, since it uses less digits than its factorization.

12977316636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682521 (or 1682519 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 51.

The spelling of 12977316636 in words is "twelve billion, nine hundred seventy-seven million, three hundred sixteen thousand, six hundred thirty-six".