22165400980 has 12 divisors (see below), whose sum is σ = 46547342100. Its totient is φ = 8866160384.

The previous prime is 22165400977. The next prime is 22165400981. The reversal of 22165400980 is 8900456122.

It can be written as a sum of positive squares in 2 ways, for example, as 11984994576 + 10180406404 = 109476^2 + 100898^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22165400981) 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, 554135005 + ... + 554135044.

It is an arithmetic number, because the mean of its divisors is an integer number (3878945175).

Almost surely, 2^22165400980 is an apocalyptic number.

22165400980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22165400980 is an abundant number, since it is smaller than the sum of its proper divisors (24381941120).

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

22165400980 is a wasteful number, since it uses less digits than its factorization.

22165400980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108270058 (or 1108270056 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 22165400980 in words is "twenty-two billion, one hundred sixty-five million, four hundred thousand, nine hundred eighty".