12256531466553 has 48 divisors (see below), whose sum is σ = 20796000264000. Its totient is φ = 6872752112640.

The previous prime is 12256531466527. The next prime is 12256531466573. The reversal of 12256531466553 is 35566413565221.

12256531466553 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 6 + 531 + 46 + 65 + 5 + 3 = 666.

It is not a de Polignac number, because 12256531466553 - 2¹⁶ = 12256531401017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12256531466553.

It is not an unprimeable number, because it can be changed into a prime (12256531466513) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61617228 + ... + 61815821.

It is an arithmetic number, because the mean of its divisors is an integer number (433250005500).

Almost surely, 2^{12256531466553} is an apocalyptic number.

It is an amenable number.

12256531466553 is a deficient number, since it is larger than the sum of its proper divisors (8539468797447).

12256531466553 is a wasteful number, since it uses less digits than its factorization.

12256531466553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123433142 (or 123433139 counting only the distinct ones).

The product of its digits is 19440000, while the sum is 54.

The spelling of 12256531466553 in words is "twelve trillion, two hundred fifty-six billion, five hundred thirty-one million, four hundred sixty-six thousand, five hundred fifty-three".