2256465031566 has 8 divisors (see below), whose sum is σ = 4512930063144. Its totient is φ = 752155010520.

The previous prime is 2256465031549. The next prime is 2256465031571. The reversal of 2256465031566 is 6651305646522.

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

2256465031566 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188038752625 + ... + 188038752636.

It is an arithmetic number, because the mean of its divisors is an integer number (564116257893).

Almost surely, 2^{2256465031566} is an apocalyptic number.

2256465031566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2256465031566 is a wasteful number, since it uses less digits than its factorization.

2256465031566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376077505266.

The product of its (nonzero) digits is 7776000, while the sum is 51.

The spelling of 2256465031566 in words is "two trillion, two hundred fifty-six billion, four hundred sixty-five million, thirty-one thousand, five hundred sixty-six".