22145972672 has 28 divisors (see below), whose sum is σ = 44502202080. Its totient is φ = 10932819456.

The previous prime is 22145972663. The next prime is 22145972729. The reversal of 22145972672 is 27627954122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2185013 + ... + 2195124.

It is an arithmetic number, because the mean of its divisors is an integer number (1589364360).

Almost surely, 2^22145972672 is an apocalyptic number.

It is an amenable number.

22145972672 is an abundant number, since it is smaller than the sum of its proper divisors (22356229408).

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

22145972672 is an equidigital number, since it uses as much as digits as its factorization.

22145972672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380228 (or 4380218 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The spelling of 22145972672 in words is "twenty-two billion, one hundred forty-five million, nine hundred seventy-two thousand, six hundred seventy-two".