256734140737676 has 24 divisors (see below), whose sum is σ = 519967879979520. Its totient is φ = 108636146350992.

The previous prime is 256734140737639. The next prime is 256734140737709. The reversal of 256734140737676 is 676737041437652.

256734140737676 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×256734140737676² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58032127250 + ... + 58032131673.

It is an arithmetic number, because the mean of its divisors is an integer number (21665328332480).

Almost surely, 2^{256734140737676} is an apocalyptic number.

It is an amenable number.

256734140737676 is an abundant number, since it is smaller than the sum of its proper divisors (263233739241844).

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

256734140737676 is a wasteful number, since it uses less digits than its factorization.

256734140737676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116064259013 (or 116064259011 counting only the distinct ones).

The product of its (nonzero) digits is 746807040, while the sum is 68.

The spelling of 256734140737676 in words is "two hundred fifty-six trillion, seven hundred thirty-four billion, one hundred forty million, seven hundred thirty-seven thousand, six hundred seventy-six".