256696970127 has 48 divisors (see below), whose sum is σ = 377865544320. Its totient is φ = 154881377664.

The previous prime is 256696970119. The next prime is 256696970143. The reversal of 256696970127 is 721079696652.

It is not a de Polignac number, because 256696970127 - 2³ = 256696970119 is a prime.

It is a super-2 number, since 2×256696970127² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256696970177) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60269524 + ... + 60273782.

It is an arithmetic number, because the mean of its divisors is an integer number (7872198840).

Almost surely, 2^256696970127 is an apocalyptic number.

256696970127 is a deficient number, since it is larger than the sum of its proper divisors (121168574193).

256696970127 is a wasteful number, since it uses less digits than its factorization.

256696970127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6584 (or 6571 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 60.

The spelling of 256696970127 in words is "two hundred fifty-six billion, six hundred ninety-six million, nine hundred seventy thousand, one hundred twenty-seven".