312775687638648 has 96 divisors (see below), whose sum is σ = 916246101607200. Its totient is φ = 95818416839424.

The previous prime is 312775687638641. The next prime is 312775687638679. The reversal of 312775687638648 is 846836786577213.

312775687638648 is a `hidden beast` number, since 3 + 1 + 2 + 7 + 7 + 568 + 7 + 6 + 3 + 8 + 6 + 48 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312775687638641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 729397140 + ... + 729825827.

It is an arithmetic number, because the mean of its divisors is an integer number (9544230225075).

Almost surely, 2^{312775687638648} is an apocalyptic number.

It is an amenable number.

312775687638648 is an abundant number, since it is smaller than the sum of its proper divisors (603470413968552).

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

312775687638648 is a wasteful number, since it uses less digits than its factorization.

312775687638648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459223221 (or 1459223214 counting only the distinct ones).

The product of its digits is 13655900160, while the sum is 81.

The spelling of 312775687638648 in words is "three hundred twelve trillion, seven hundred seventy-five billion, six hundred eighty-seven million, six hundred thirty-eight thousand, six hundred forty-eight".