256706696883 has 64 divisors (see below), whose sum is σ = 423611596800. Its totient is φ = 134652792960.

The previous prime is 256706696881. The next prime is 256706696887. The reversal of 256706696883 is 388696607652.

It is a happy number.

It is not a de Polignac number, because 256706696883 - 2¹ = 256706696881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256706696881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37141198 + ... + 37148108.

It is an arithmetic number, because the mean of its divisors is an integer number (6618931200).

Almost surely, 2^256706696883 is an apocalyptic number.

256706696883 is a deficient number, since it is larger than the sum of its proper divisors (166904899917).

256706696883 is a wasteful number, since it uses less digits than its factorization.

256706696883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7672.

The product of its (nonzero) digits is 156764160, while the sum is 66.

The spelling of 256706696883 in words is "two hundred fifty-six billion, seven hundred six million, six hundred ninety-six thousand, eight hundred eighty-three".