22166505444 has 24 divisors (see below), whose sum is σ = 51800112448. Its totient is φ = 7377654240.

The previous prime is 22166505437. The next prime is 22166505467. The reversal of 22166505444 is 44450566122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1389352 + ... + 1405215.

Almost surely, 2^22166505444 is an apocalyptic number.

It is an amenable number.

22166505444 is an abundant number, since it is smaller than the sum of its proper divisors (29633607004).

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

22166505444 is a wasteful number, since it uses less digits than its factorization.

22166505444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795235 (or 2795233 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

The spelling of 22166505444 in words is "twenty-two billion, one hundred sixty-six million, five hundred five thousand, four hundred forty-four".