56440928866 has 16 divisors (see below), whose sum is σ = 96884732160. Its totient is φ = 24156756000.

The previous prime is 56440928839. The next prime is 56440928879. The reversal of 56440928866 is 66882904465.

It is a self number, because there is not a number n which added to its sum of digits gives 56440928866.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2673571 + ... + 2694598.

It is an arithmetic number, because the mean of its divisors is an integer number (6055295760).

Almost surely, 2^56440928866 is an apocalyptic number.

56440928866 is a deficient number, since it is larger than the sum of its proper divisors (40443803294).

56440928866 is a wasteful number, since it uses less digits than its factorization.

56440928866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368929.

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 56440928866 in words is "fifty-six billion, four hundred forty million, nine hundred twenty-eight thousand, eight hundred sixty-six".