256050576556615 has 4 divisors (see below), whose sum is σ = 307260691867944. Its totient is φ = 204840461245288.

The previous prime is 256050576556559. The next prime is 256050576556679. The reversal of 256050576556615 is 516655675050652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256050576556615 - 2³⁷ = 255913137603143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25605057655657 + ... + 25605057655666.

It is an arithmetic number, because the mean of its divisors is an integer number (76815172966986).

Almost surely, 2^{256050576556615} is an apocalyptic number.

256050576556615 is a deficient number, since it is larger than the sum of its proper divisors (51210115311329).

256050576556615 is an equidigital number, since it uses as much as digits as its factorization.

256050576556615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51210115311328.

The product of its (nonzero) digits is 283500000, while the sum is 64.

The spelling of 256050576556615 in words is "two hundred fifty-six trillion, fifty billion, five hundred seventy-six million, five hundred fifty-six thousand, six hundred fifteen".