256590474563 has 8 divisors (see below), whose sum is σ = 256887340032. Its totient is φ = 256293777096.

The previous prime is 256590474551. The next prime is 256590474587. The reversal of 256590474563 is 365474095652.

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 256590474563 - 2¹² = 256590470467 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256590474499 and 256590474508.

It is not an unprimeable number, because it can be changed into a prime (256590474163) 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, 3153356 + ... + 3233702.

It is an arithmetic number, because the mean of its divisors is an integer number (32110917504).

Almost surely, 2^256590474563 is an apocalyptic number.

256590474563 is a deficient number, since it is larger than the sum of its proper divisors (296865469).

256590474563 is a wasteful number, since it uses less digits than its factorization.

256590474563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84001.

The product of its (nonzero) digits is 27216000, while the sum is 56.

The spelling of 256590474563 in words is "two hundred fifty-six billion, five hundred ninety million, four hundred seventy-four thousand, five hundred sixty-three".