22143720272 has 20 divisors (see below), whose sum is σ = 43345764756. Its totient is φ = 10957716480.

The previous prime is 22143720253. The next prime is 22143720293. The reversal of 22143720272 is 27202734122.

It can be written as a sum of positive squares in 2 ways, for example, as 17340675856 + 4803044416 = 131684^2 + 69304^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7132379 + ... + 7135482.

Almost surely, 2^22143720272 is an apocalyptic number.

It is an amenable number.

22143720272 is a deficient number, since it is larger than the sum of its proper divisors (21202044484).

22143720272 is a wasteful number, since it uses less digits than its factorization.

22143720272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14267966 (or 14267960 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 32.

The spelling of 22143720272 in words is "twenty-two billion, one hundred forty-three million, seven hundred twenty thousand, two hundred seventy-two".