256466022559 has 8 divisors (see below), whose sum is σ = 267644482272. Its totient is φ = 245289876480.

The previous prime is 256466022529. The next prime is 256466022569. The reversal of 256466022559 is 955220664652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256466022559 - 2⁷ = 256466022431 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 (256466022529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349954 + ... + 797119.

It is an arithmetic number, because the mean of its divisors is an integer number (33455560284).

Almost surely, 2^256466022559 is an apocalyptic number.

256466022559 is a deficient number, since it is larger than the sum of its proper divisors (11178459713).

256466022559 is a wasteful number, since it uses less digits than its factorization.

256466022559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156817.

The product of its (nonzero) digits is 7776000, while the sum is 52.

The spelling of 256466022559 in words is "two hundred fifty-six billion, four hundred sixty-six million, twenty-two thousand, five hundred fifty-nine".