56021545643 has 8 divisors (see below), whose sum is σ = 64047487488. Its totient is φ = 48001319784.

The previous prime is 56021545637. The next prime is 56021545661. The reversal of 56021545643 is 34654512065.

It is a happy number.

56021545643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 56021545643 - 2⁴ = 56021545627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56021545643.

It is not an unprimeable number, because it can be changed into a prime (56021545693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1407971 + ... + 1447212.

It is an arithmetic number, because the mean of its divisors is an integer number (8005935936).

Almost surely, 2^56021545643 is an apocalyptic number.

56021545643 is a deficient number, since it is larger than the sum of its proper divisors (8025941845).

56021545643 is a wasteful number, since it uses less digits than its factorization.

56021545643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2857993.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 56021545643 in words is "fifty-six billion, twenty-one million, five hundred forty-five thousand, six hundred forty-three".