256742712730675 has 48 divisors (see below), whose sum is σ = 331093978566624. Its totient is φ = 197333769600000.

The previous prime is 256742712730601. The next prime is 256742712730709. The reversal of 256742712730675 is 576037217247652.

It is a happy number.

It is not a de Polignac number, because 256742712730675 - 2¹¹ = 256742712728627 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 226129905 + ... + 227262445.

It is an arithmetic number, because the mean of its divisors is an integer number (6897791220138).

Almost surely, 2^{256742712730675} is an apocalyptic number.

256742712730675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

256742712730675 is a deficient number, since it is larger than the sum of its proper divisors (74351265835949).

256742712730675 is a wasteful number, since it uses less digits than its factorization.

256742712730675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135960 (or 1135955 counting only the distinct ones).

The product of its (nonzero) digits is 207446400, while the sum is 64.

The spelling of 256742712730675 in words is "two hundred fifty-six trillion, seven hundred forty-two billion, seven hundred twelve million, seven hundred thirty thousand, six hundred seventy-five".