56644269566 has 8 divisors (see below), whose sum is σ = 85053373920. Its totient is φ = 28293144928.

The previous prime is 56644269547. The next prime is 56644269587. The reversal of 56644269566 is 66596244665.

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

It is a congruent number.

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, 14492486 + ... + 14496393.

It is an arithmetic number, because the mean of its divisors is an integer number (10631671740).

Almost surely, 2^56644269566 is an apocalyptic number.

56644269566 is a deficient number, since it is larger than the sum of its proper divisors (28409104354).

56644269566 is a wasteful number, since it uses less digits than its factorization.

56644269566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28989858.

The product of its digits is 55987200, while the sum is 59.

The spelling of 56644269566 in words is "fifty-six billion, six hundred forty-four million, two hundred sixty-nine thousand, five hundred sixty-six".