312788856360978 has 32 divisors (see below), whose sum is σ = 695086930062720. Its totient is φ = 104262864731280.

The previous prime is 312788856360881. The next prime is 312788856360979. The reversal of 312788856360978 is 879063658887213.

312788856360978 is a `hidden beast` number, since 3 + 12 + 7 + 88 + 85 + 6 + 360 + 97 + 8 = 666.

It is a super-2 number, since 2×312788856360978² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312788856360897 and 312788856360906.

It is not an unprimeable number, because it can be changed into a prime (312788856360979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112614451 + ... + 115358537.

It is an arithmetic number, because the mean of its divisors is an integer number (21721466564460).

Almost surely, 2^{312788856360978} is an apocalyptic number.

312788856360978 is an abundant number, since it is smaller than the sum of its proper divisors (382298073701742).

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

312788856360978 is a wasteful number, since it uses less digits than its factorization.

312788856360978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4854959 (or 4854953 counting only the distinct ones).

The product of its (nonzero) digits is 5852528640, while the sum is 81.

The spelling of 312788856360978 in words is "three hundred twelve trillion, seven hundred eighty-eight billion, eight hundred fifty-six million, three hundred sixty thousand, nine hundred seventy-eight".