20566311712432 has 20 divisors (see below), whose sum is σ = 40522605706440. Its totient is φ = 10108865078528.

The previous prime is 20566311712417. The next prime is 20566311712517. The reversal of 20566311712432 is 23421711366502.

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 3 ways as a sum of consecutive naturals, for example, 10893172633 + ... + 10893174520.

It is an arithmetic number, because the mean of its divisors is an integer number (2026130285322).

Almost surely, 2^{20566311712432} is an apocalyptic number.

It is an amenable number.

20566311712432 is a deficient number, since it is larger than the sum of its proper divisors (19956293994008).

20566311712432 is a wasteful number, since it uses less digits than its factorization.

20566311712432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21786347220 (or 21786347214 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 20566311712432 in words is "twenty trillion, five hundred sixty-six billion, three hundred eleven million, seven hundred twelve thousand, four hundred thirty-two".