256253454361 has 16 divisors (see below), whose sum is σ = 266538351168. Its totient is φ = 246206750400.

The previous prime is 256253454343. The next prime is 256253454371. The reversal of 256253454361 is 163454352652.

It is a cyclic number.

It is not a de Polignac number, because 256253454361 - 2⁵ = 256253454329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256253454371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559306 + ... + 908476.

It is an arithmetic number, because the mean of its divisors is an integer number (16658646948).

Almost surely, 2^256253454361 is an apocalyptic number.

It is an amenable number.

256253454361 is a deficient number, since it is larger than the sum of its proper divisors (10284896807).

256253454361 is a wasteful number, since it uses less digits than its factorization.

256253454361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349512.

The product of its digits is 2592000, while the sum is 46.

The spelling of 256253454361 in words is "two hundred fifty-six billion, two hundred fifty-three million, four hundred fifty-four thousand, three hundred sixty-one".