256048976745 has 16 divisors (see below), whose sum is σ = 455198181120. Its totient is φ = 136559454192.

The previous prime is 256048976723. The next prime is 256048976779. The reversal of 256048976745 is 547679840652.

256048976745 is a `hidden beast` number, since 2 + 56 + 0 + 489 + 7 + 67 + 45 = 666.

It is not a de Polignac number, because 256048976745 - 2⁸ = 256048976489 is a prime.

It is a super-2 number, since 2×256048976745² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 948329409 + ... + 948329678.

It is an arithmetic number, because the mean of its divisors is an integer number (28449886320).

Almost surely, 2^256048976745 is an apocalyptic number.

It is an amenable number.

256048976745 is a deficient number, since it is larger than the sum of its proper divisors (199149204375).

256048976745 is a wasteful number, since it uses less digits than its factorization.

256048976745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896659101 (or 1896659095 counting only the distinct ones).

The product of its (nonzero) digits is 101606400, while the sum is 63.

The spelling of 256048976745 in words is "two hundred fifty-six billion, forty-eight million, nine hundred seventy-six thousand, seven hundred forty-five".