56426546143521 has 12 divisors (see below), whose sum is σ = 81505308847872. Its totient is φ = 37617560005176.

The previous prime is 56426546143483. The next prime is 56426546143529. The reversal of 56426546143521 is 12534164562465.

56426546143521 is a `hidden beast` number, since 5 + 6 + 4 + 2 + 6 + 54 + 61 + 4 + 3 + 521 = 666.

It is not a de Polignac number, because 56426546143521 - 2¹³ = 56426546135329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56426546143529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8819661 + ... + 13807226.

It is an arithmetic number, because the mean of its divisors is an integer number (6792109070656).

Almost surely, 2^{56426546143521} is an apocalyptic number.

It is an amenable number.

56426546143521 is a deficient number, since it is larger than the sum of its proper divisors (25078762704351).

56426546143521 is a wasteful number, since it uses less digits than its factorization.

56426546143521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22903980 (or 22903977 counting only the distinct ones).

The product of its digits is 20736000, while the sum is 54.

The spelling of 56426546143521 in words is "fifty-six trillion, four hundred twenty-six billion, five hundred forty-six million, one hundred forty-three thousand, five hundred twenty-one".