256630300315650 has 144 divisors (see below), whose sum is σ = 730989857925600. Its totient is φ = 64366493806080.

The previous prime is 256630300315637. The next prime is 256630300315679. The reversal of 256630300315650 is 56513003036652.

256630300315650 is a `hidden beast` number, since 2 + 5 + 6 + 630 + 3 + 0 + 0 + 3 + 1 + 5 + 6 + 5 + 0 = 666.

It is a super-2 number, since 2×256630300315650² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 256630300315596 and 256630300315605.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 106780039 + ... + 109156938.

Almost surely, 2^{256630300315650} is an apocalyptic number.

256630300315650 is an abundant number, since it is smaller than the sum of its proper divisors (474359557609950).

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

256630300315650 is a wasteful number, since it uses less digits than its factorization.

256630300315650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215937153 (or 215937145 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 45.

The spelling of 256630300315650 in words is "two hundred fifty-six trillion, six hundred thirty billion, three hundred million, three hundred fifteen thousand, six hundred fifty".