22389143872 has 28 divisors (see below), whose sum is σ = 44434997236. Its totient is φ = 11192924160.

The previous prime is 22389143863. The next prime is 22389143879. The reversal of 22389143872 is 27834198322.

It can be written as a sum of positive squares in 2 ways, for example, as 12513554496 + 9875589376 = 111864^2 + 99376^2 .

It is a super-2 number, since 2×22389143872² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22389143879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493672 + ... + 537112.

It is an arithmetic number, because the mean of its divisors is an integer number (1586964187).

Almost surely, 2^22389143872 is an apocalyptic number.

It is an amenable number.

22389143872 is a deficient number, since it is larger than the sum of its proper divisors (22045853364).

22389143872 is an equidigital number, since it uses as much as digits as its factorization.

22389143872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51506 (or 51496 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 49.

The spelling of 22389143872 in words is "twenty-two billion, three hundred eighty-nine million, one hundred forty-three thousand, eight hundred seventy-two".