256734200224661 has 8 divisors (see below), whose sum is σ = 270658376931264. Its totient is φ = 243040175199360.

The previous prime is 256734200224651. The next prime is 256734200224673. The reversal of 256734200224661 is 166422002437652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256734200224661 - 2⁴⁶ = 186365456046997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256734200224651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57537918035 + ... + 57537922496.

It is an arithmetic number, because the mean of its divisors is an integer number (33832297116408).

Almost surely, 2^{256734200224661} is an apocalyptic number.

It is an amenable number.

256734200224661 is a deficient number, since it is larger than the sum of its proper divisors (13924176706603).

256734200224661 is a wasteful number, since it uses less digits than its factorization.

256734200224661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115075840651.

The product of its (nonzero) digits is 5806080, while the sum is 50.

The spelling of 256734200224661 in words is "two hundred fifty-six trillion, seven hundred thirty-four billion, two hundred million, two hundred twenty-four thousand, six hundred sixty-one".