256162875648 has 36 divisors (see below), whose sum is σ = 681766822128. Its totient is φ = 85387624960.

The previous prime is 256162875607. The next prime is 256162875671. The reversal of 256162875648 is 846578261652.

It is a super-2 number, since 2×256162875648² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256162875591 and 256162875600.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166771938 + ... + 166773473.

Almost surely, 2^256162875648 is an apocalyptic number.

It is an amenable number.

256162875648 is an abundant number, since it is smaller than the sum of its proper divisors (425603946480).

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

256162875648 is an equidigital number, since it uses as much as digits as its factorization.

256162875648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333545430 (or 333545416 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 60.

The spelling of 256162875648 in words is "two hundred fifty-six billion, one hundred sixty-two million, eight hundred seventy-five thousand, six hundred forty-eight".