56540044004566 has 32 divisors (see below), whose sum is σ = 91463392591200. Its totient is φ = 26125409157120.

The previous prime is 56540044004491. The next prime is 56540044004573. The reversal of 56540044004566 is 66540044004565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9244966 + ... + 14090758.

It is an arithmetic number, because the mean of its divisors is an integer number (2858231018475).

Almost surely, 2^{56540044004566} is an apocalyptic number.

56540044004566 is a deficient number, since it is larger than the sum of its proper divisors (34923348586634).

56540044004566 is a wasteful number, since it uses less digits than its factorization.

56540044004566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4853344.

The product of its (nonzero) digits is 6912000, while the sum is 49.

Subtracting 56540044004566 from its reverse (66540044004565), we obtain a palindrome (9999999999999).

The spelling of 56540044004566 in words is "fifty-six trillion, five hundred forty billion, forty-four million, four thousand, five hundred sixty-six".