56546344721 has 8 divisors (see below), whose sum is σ = 59045028864. Its totient is φ = 54051006240.

The previous prime is 56546344709. The next prime is 56546344763. The reversal of 56546344721 is 12744364565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56546344721 - 2¹⁸ = 56546082577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56546349721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 801836 + ... + 869501.

It is an arithmetic number, because the mean of its divisors is an integer number (7380628608).

Almost surely, 2^56546344721 is an apocalyptic number.

It is an amenable number.

56546344721 is a deficient number, since it is larger than the sum of its proper divisors (2498684143).

56546344721 is a wasteful number, since it uses less digits than its factorization.

56546344721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672831.

The product of its digits is 2419200, while the sum is 47.

The spelling of 56546344721 in words is "fifty-six billion, five hundred forty-six million, three hundred forty-four thousand, seven hundred twenty-one".