56643558554 has 8 divisors (see below), whose sum is σ = 92689459488. Its totient is φ = 25747072060.

The previous prime is 56643558523. The next prime is 56643558563. The reversal of 56643558554 is 45585534665.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 56643558554.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1287353582 + ... + 1287353625.

It is an arithmetic number, because the mean of its divisors is an integer number (11586182436).

Almost surely, 2^56643558554 is an apocalyptic number.

56643558554 is a deficient number, since it is larger than the sum of its proper divisors (36045900934).

56643558554 is a wasteful number, since it uses less digits than its factorization.

56643558554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574707220.

The product of its digits is 43200000, while the sum is 56.

The spelling of 56643558554 in words is "fifty-six billion, six hundred forty-three million, five hundred fifty-eight thousand, five hundred fifty-four".