256623303560415 has 32 divisors (see below), whose sum is σ = 449193219169536. Its totient is φ = 124070945602560.

The previous prime is 256623303560411. The next prime is 256623303560417. The reversal of 256623303560415 is 514065303326652.

It is not a de Polignac number, because 256623303560415 - 2² = 256623303560411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256623303560411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2202905989 + ... + 2203022478.

It is an arithmetic number, because the mean of its divisors is an integer number (14037288099048).

Almost surely, 2^{256623303560415} is an apocalyptic number.

256623303560415 is a deficient number, since it is larger than the sum of its proper divisors (192569915609121).

256623303560415 is a wasteful number, since it uses less digits than its factorization.

256623303560415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4405928839.

The product of its (nonzero) digits is 11664000, while the sum is 51.

The spelling of 256623303560415 in words is "two hundred fifty-six trillion, six hundred twenty-three billion, three hundred three million, five hundred sixty thousand, four hundred fifteen".