256145747541652 has 24 divisors (see below), whose sum is σ = 449363311891200. Its totient is φ = 127756546034496.

The previous prime is 256145747541623. The next prime is 256145747541781.

256145747541652 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×256145747541652² (a number of 30 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36280377 + ... + 42761632.

It is an arithmetic number, because the mean of its divisors is an integer number (18723471328800).

Almost surely, 2^{256145747541652} is an apocalyptic number.

It is an amenable number.

256145747541652 is a deficient number, since it is larger than the sum of its proper divisors (193217564349548).

256145747541652 is a wasteful number, since it uses less digits than its factorization.

256145747541652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79044015 (or 79044013 counting only the distinct ones).

The product of its digits is 282240000, while the sum is 64.

The spelling of 256145747541652 in words is "two hundred fifty-six trillion, one hundred forty-five billion, seven hundred forty-seven million, five hundred forty-one thousand, six hundred fifty-two".