256501336301 has 16 divisors (see below), whose sum is σ = 299984160000. Its totient is φ = 219228219504.

The previous prime is 256501336271. The next prime is 256501336303. The reversal of 256501336301 is 103633105652.

It is not a de Polignac number, because 256501336301 - 2¹⁸ = 256501074157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256501336303) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 951665 + ... + 1191078.

It is an arithmetic number, because the mean of its divisors is an integer number (18749010000).

Almost surely, 2^256501336301 is an apocalyptic number.

It is an amenable number.

256501336301 is a deficient number, since it is larger than the sum of its proper divisors (43482823699).

256501336301 is an equidigital number, since it uses as much as digits as its factorization.

256501336301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143113 (or 2143099 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 35.

The spelling of 256501336301 in words is "two hundred fifty-six billion, five hundred one million, three hundred thirty-six thousand, three hundred one".