56501689473 has 12 divisors (see below), whose sum is σ = 81624276708. Its totient is φ = 37662842880.

The previous prime is 56501689471. The next prime is 56501689483. The reversal of 56501689473 is 37498610565.

56501689473 is a `hidden beast` number, since 5 + 6 + 5 + 0 + 168 + 9 + 473 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 51521282289 + 4980407184 = 226983^2 + 70572^2 .

It is not a de Polignac number, because 56501689473 - 2¹ = 56501689471 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (56501689471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339540 + ... + 477797.

It is an arithmetic number, because the mean of its divisors is an integer number (6802023059).

Almost surely, 2^56501689473 is an apocalyptic number.

It is an amenable number.

56501689473 is a deficient number, since it is larger than the sum of its proper divisors (25122587235).

56501689473 is a wasteful number, since it uses less digits than its factorization.

56501689473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825024 (or 825021 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

It can be divided in two parts, 5650168 and 9473, that added together give a square (5659641 = 2379²).

The spelling of 56501689473 in words is "fifty-six billion, five hundred one million, six hundred eighty-nine thousand, four hundred seventy-three".