20433564800816 has 20 divisors (see below), whose sum is σ = 41918857202232. Its totient is φ = 9615795200256.

The previous prime is 20433564800801. The next prime is 20433564800827. The reversal of 20433564800816 is 61800846533402.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 37561699730 + ... + 37561700273.

Almost surely, 2^{20433564800816} is an apocalyptic number.

It is an amenable number.

20433564800816 is an abundant number, since it is smaller than the sum of its proper divisors (21485292401416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20433564800816 is a wasteful number, since it uses less digits than its factorization.

20433564800816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75123400028 (or 75123400022 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 50.

The spelling of 20433564800816 in words is "twenty trillion, four hundred thirty-three billion, five hundred sixty-four million, eight hundred thousand, eight hundred sixteen".