256630356206111 has 4 divisors (see below), whose sum is σ = 260244868265424. Its totient is φ = 253015844146800.

The previous prime is 256630356206047. The next prime is 256630356206129. The reversal of 256630356206111 is 111602653036652.

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 256630356206111 - 2⁶ = 256630356206047 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 (256630356206141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1807256029550 + ... + 1807256029691.

It is an arithmetic number, because the mean of its divisors is an integer number (65061217066356).

Almost surely, 2^{256630356206111} is an apocalyptic number.

256630356206111 is a deficient number, since it is larger than the sum of its proper divisors (3614512059313).

256630356206111 is an equidigital number, since it uses as much as digits as its factorization.

256630356206111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3614512059312.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 256630356206111 in words is "two hundred fifty-six trillion, six hundred thirty billion, three hundred fifty-six million, two hundred six thousand, one hundred eleven".