256560181065652 has 48 divisors (see below), whose sum is σ = 483713411892480. Its totient is φ = 118684782748800.

The previous prime is 256560181065647. The next prime is 256560181065731.

256560181065652 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×256560181065652³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76254999 + ... + 79548382.

It is an arithmetic number, because the mean of its divisors is an integer number (10077362747760).

Almost surely, 2^{256560181065652} is an apocalyptic number.

It is an amenable number.

256560181065652 is a deficient number, since it is larger than the sum of its proper divisors (227153230826828).

256560181065652 is a wasteful number, since it uses less digits than its factorization.

256560181065652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155803912 (or 155803910 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 58.

The spelling of 256560181065652 in words is "two hundred fifty-six trillion, five hundred sixty billion, one hundred eighty-one million, sixty-five thousand, six hundred fifty-two".