256024160565 has 32 divisors (see below), whose sum is σ = 410712374016. Its totient is φ = 136188664320.

The previous prime is 256024160551. The next prime is 256024160569. The reversal of 256024160565 is 565061420652.

It is a happy number.

It is not a de Polignac number, because 256024160565 - 2⁶ = 256024160501 is a prime.

It is a super-2 number, since 2×256024160565² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256024160569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12975087 + ... + 12994803.

It is an arithmetic number, because the mean of its divisors is an integer number (12834761688).

Almost surely, 2^256024160565 is an apocalyptic number.

It is an amenable number.

256024160565 is a deficient number, since it is larger than the sum of its proper divisors (154688213451).

256024160565 is a wasteful number, since it uses less digits than its factorization.

256024160565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21949.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 256024160565 in words is "two hundred fifty-six billion, twenty-four million, one hundred sixty thousand, five hundred sixty-five".