56505624643 has 4 divisors (see below), whose sum is σ = 60852211168. Its totient is φ = 52159038120.

The previous prime is 56505624613. The next prime is 56505624653. The reversal of 56505624643 is 34642650565.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34642650565 = 5 ⋅6928530113.

It is a cyclic number.

It is not a de Polignac number, because 56505624643 - 2²¹ = 56503527491 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56505624593 and 56505624602.

It is not an unprimeable number, because it can be changed into a prime (56505624613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2173293243 + ... + 2173293268.

It is an arithmetic number, because the mean of its divisors is an integer number (15213052792).

Almost surely, 2^56505624643 is an apocalyptic number.

56505624643 is a deficient number, since it is larger than the sum of its proper divisors (4346586525).

56505624643 is a wasteful number, since it uses less digits than its factorization.

56505624643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4346586524.

The product of its (nonzero) digits is 2592000, while the sum is 46.

The spelling of 56505624643 in words is "fifty-six billion, five hundred five million, six hundred twenty-four thousand, six hundred forty-three".