18566868534045 has 32 divisors (see below), whose sum is σ = 33675939696000. Its totient is φ = 8659527346944.

The previous prime is 18566868533987. The next prime is 18566868534143. The reversal of 18566868534045 is 54043586866581.

It is not a de Polignac number, because 18566868534045 - 2¹⁶ = 18566868468509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2505646570 + ... + 2505653979.

It is an arithmetic number, because the mean of its divisors is an integer number (1052373115500).

Almost surely, 2^{18566868534045} is an apocalyptic number.

18566868534045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18566868534045 is a deficient number, since it is larger than the sum of its proper divisors (15109071161955).

18566868534045 is a wasteful number, since it uses less digits than its factorization.

18566868534045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5011300589.

The product of its (nonzero) digits is 663552000, while the sum is 69.

The spelling of 18566868534045 in words is "eighteen trillion, five hundred sixty-six billion, eight hundred sixty-eight million, five hundred thirty-four thousand, forty-five".