256611477254204 has 12 divisors (see below), whose sum is σ = 449817289999728. Its totient is φ = 128092251540000.

The previous prime is 256611477254147. The next prime is 256611477254261. The reversal of 256611477254204 is 402452774116652.

It is an interprime number because it is at equal distance from previous prime (256611477254147) and next prime (256611477254261).

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 256611477254204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53371769072 + ... + 53371773879.

It is an arithmetic number, because the mean of its divisors is an integer number (37484774166644).

Almost surely, 2^{256611477254204} is an apocalyptic number.

It is an amenable number.

256611477254204 is a deficient number, since it is larger than the sum of its proper divisors (193205812745524).

256611477254204 is a wasteful number, since it uses less digits than its factorization.

256611477254204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106743543556 (or 106743543554 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 56.

The spelling of 256611477254204 in words is "two hundred fifty-six trillion, six hundred eleven billion, four hundred seventy-seven million, two hundred fifty-four thousand, two hundred four".