256622376415127 has 4 divisors (see below), whose sum is σ = 256666191066096. Its totient is φ = 256578561764160.

The previous prime is 256622376415103. The next prime is 256622376415133. The reversal of 256622376415127 is 721514673226652.

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 256622376415127 - 2²⁰ = 256622375366551 is a prime.

It is a super-2 number, since 2×256622376415127² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256622376415187) 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, 21907316699 + ... + 21907328412.

It is an arithmetic number, because the mean of its divisors is an integer number (64166547766524).

Almost surely, 2^{256622376415127} is an apocalyptic number.

256622376415127 is a deficient number, since it is larger than the sum of its proper divisors (43814650969).

256622376415127 is an equidigital number, since it uses as much as digits as its factorization.

256622376415127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43814650968.

The product of its digits is 50803200, while the sum is 59.

The spelling of 256622376415127 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, three hundred seventy-six million, four hundred fifteen thousand, one hundred twenty-seven".