256734200224660 has 12 divisors (see below), whose sum is σ = 539141820471828. Its totient is φ = 102693680089856.

The previous prime is 256734200224651. The next prime is 256734200224673. The reversal of 256734200224660 is 66422002437652.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 197865747058576 + 58868453166084 = 14066476^2 + 7672578^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6418355005597 + ... + 6418355005636.

It is an arithmetic number, because the mean of its divisors is an integer number (44928485039319).

Almost surely, 2^{256734200224660} is an apocalyptic number.

256734200224660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256734200224660 is an abundant number, since it is smaller than the sum of its proper divisors (282407620247168).

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

256734200224660 is a wasteful number, since it uses less digits than its factorization.

256734200224660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12836710011242 (or 12836710011240 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 49.

The spelling of 256734200224660 in words is "two hundred fifty-six trillion, seven hundred thirty-four billion, two hundred million, two hundred twenty-four thousand, six hundred sixty".