256949314859999 has 8 divisors (see below), whose sum is σ = 265240242018432. Its totient is φ = 248658527675520.

The previous prime is 256949314859917. The next prime is 256949314860067. The reversal of 256949314859999 is 999958413949652.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256949314859999 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 (256949314859299) 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, 31256534 + ... + 38611779.

It is an arithmetic number, because the mean of its divisors is an integer number (33155030252304).

Almost surely, 2^{256949314859999} is an apocalyptic number.

256949314859999 is a deficient number, since it is larger than the sum of its proper divisors (8290927158433).

256949314859999 is a wasteful number, since it uses less digits than its factorization.

256949314859999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69986977.

The product of its digits is 61222003200, while the sum is 92.

The spelling of 256949314859999 in words is "two hundred fifty-six trillion, nine hundred forty-nine billion, three hundred fourteen million, eight hundred fifty-nine thousand, nine hundred ninety-nine".