256531653055 has 8 divisors (see below), whose sum is σ = 307844881344. Its totient is φ = 205220724000.

The previous prime is 256531652963. The next prime is 256531653193. The reversal of 256531653055 is 550356135652.

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

It is not a de Polignac number, because 256531653055 - 2⁹ = 256531652543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256531652996 and 256531653014.

It is a congruent number.

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, 318996 + ... + 784105.

It is an arithmetic number, because the mean of its divisors is an integer number (38480610168).

Almost surely, 2^256531653055 is an apocalyptic number.

256531653055 is a deficient number, since it is larger than the sum of its proper divisors (51313228289).

256531653055 is a wasteful number, since it uses less digits than its factorization.

256531653055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149617.

The product of its (nonzero) digits is 2025000, while the sum is 46.

The spelling of 256531653055 in words is "two hundred fifty-six billion, five hundred thirty-one million, six hundred fifty-three thousand, fifty-five".