21943442340800 has 42 divisors (see below), whose sum is σ = 53994582813768. Its totient is φ = 8777376935680.

The previous prime is 21943442340797. The next prime is 21943442340817. The reversal of 21943442340800 is 804324434912.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6857324132 + ... + 6857327331.

Almost surely, 2^{21943442340800} is an apocalyptic number.

21943442340800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21943442340800 is an abundant number, since it is smaller than the sum of its proper divisors (32051140472968).

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

21943442340800 is a wasteful number, since it uses less digits than its factorization.

21943442340800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13714651485 (or 13714651470 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 44.

The spelling of 21943442340800 in words is "twenty-one trillion, nine hundred forty-three billion, four hundred forty-two million, three hundred forty thousand, eight hundred".