56564821384 has 16 divisors (see below), whose sum is σ = 106159017420. Its totient is φ = 28255750080.

The previous prime is 56564821373. The next prime is 56564821447. The reversal of 56564821384 is 48312846565.

It can be written as a sum of positive squares in 2 ways, for example, as 52268018884 + 4296802500 = 228622^2 + 65550^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3323559 + ... + 3340534.

Almost surely, 2^56564821384 is an apocalyptic number.

It is an amenable number.

56564821384 is a deficient number, since it is larger than the sum of its proper divisors (49594196036).

56564821384 is a wasteful number, since it uses less digits than its factorization.

56564821384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6665160 (or 6665156 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 52.

The spelling of 56564821384 in words is "fifty-six billion, five hundred sixty-four million, eight hundred twenty-one thousand, three hundred eighty-four".