256607514623 has 4 divisors (see below), whose sum is σ = 265456049640. Its totient is φ = 247758979608.

The previous prime is 256607514613. The next prime is 256607514661. The reversal of 256607514623 is 326415706652.

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 256607514623 - 2¹² = 256607510527 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 (256607514613) 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, 4424267465 + ... + 4424267522.

It is an arithmetic number, because the mean of its divisors is an integer number (66364012410).

Almost surely, 2^256607514623 is an apocalyptic number.

256607514623 is a deficient number, since it is larger than the sum of its proper divisors (8848535017).

256607514623 is an equidigital number, since it uses as much as digits as its factorization.

256607514623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8848535016.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 256607514623 in words is "two hundred fifty-six billion, six hundred seven million, five hundred fourteen thousand, six hundred twenty-three".