256800542359 has 4 divisors (see below), whose sum is σ = 257676995016. Its totient is φ = 255924089704.

The previous prime is 256800542351. The next prime is 256800542429. The reversal of 256800542359 is 953245008652.

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 256800542359 - 2³ = 256800542351 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 (256800542351) 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, 438225889 + ... + 438226474.

It is an arithmetic number, because the mean of its divisors is an integer number (64419248754).

Almost surely, 2^256800542359 is an apocalyptic number.

256800542359 is a deficient number, since it is larger than the sum of its proper divisors (876452657).

256800542359 is an equidigital number, since it uses as much as digits as its factorization.

256800542359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876452656.

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 256800542359 in words is "two hundred fifty-six billion, eight hundred million, five hundred forty-two thousand, three hundred fifty-nine".