22143720684 has 12 divisors (see below), whose sum is σ = 51668681624. Its totient is φ = 7381240224.

The previous prime is 22143720653. The next prime is 22143720691. The reversal of 22143720684 is 48602734122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 922655017 + ... + 922655040.

Almost surely, 2^22143720684 is an apocalyptic number.

It is an amenable number.

22143720684 is an abundant number, since it is smaller than the sum of its proper divisors (29524960940).

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

22143720684 is a wasteful number, since it uses less digits than its factorization.

22143720684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845310064 (or 1845310062 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 22143720684 in words is "twenty-two billion, one hundred forty-three million, seven hundred twenty thousand, six hundred eighty-four".