12313663728 has 40 divisors (see below), whose sum is σ = 32102149200. Its totient is φ = 4066896384.

The previous prime is 12313663727. The next prime is 12313663753. The reversal of 12313663728 is 82736631321.

It is a self number, because there is not a number n which added to its sum of digits gives 12313663728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313663727) 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, 1171533 + ... + 1181996.

It is an arithmetic number, because the mean of its divisors is an integer number (802553730).

Almost surely, 2^12313663728 is an apocalyptic number.

It is an amenable number.

12313663728 is an abundant number, since it is smaller than the sum of its proper divisors (19788485472).

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

12313663728 is a wasteful number, since it uses less digits than its factorization.

12313663728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353649 (or 2353643 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The spelling of 12313663728 in words is "twelve billion, three hundred thirteen million, six hundred sixty-three thousand, seven hundred twenty-eight".