256622330372315 has 4 divisors (see below), whose sum is σ = 307946796446784. Its totient is φ = 205297864297848.

The previous prime is 256622330372311. The next prime is 256622330372321. The reversal of 256622330372315 is 513273033226652.

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 256622330372315 - 2² = 256622330372311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256622330372311) 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, 25662233037227 + ... + 25662233037236.

It is an arithmetic number, because the mean of its divisors is an integer number (76986699111696).

Almost surely, 2^{256622330372315} is an apocalyptic number.

256622330372315 is a deficient number, since it is larger than the sum of its proper divisors (51324466074469).

256622330372315 is an equidigital number, since it uses as much as digits as its factorization.

256622330372315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51324466074468.

The product of its (nonzero) digits is 8164800, while the sum is 50.

Adding to 256622330372315 its reverse (513273033226652), we get a palindrome (769895363598967).

The spelling of 256622330372315 in words is "two hundred fifty-six trillion, six hundred twenty-two billion, three hundred thirty million, three hundred seventy-two thousand, three hundred fifteen".