22185812460 has 96 divisors (see below), whose sum is σ = 74731184640. Its totient is φ = 4804144128.

The previous prime is 22185812419. The next prime is 22185812471. The reversal of 22185812460 is 6421858122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1382109 + ... + 1398068.

It is an arithmetic number, because the mean of its divisors is an integer number (778449840).

Almost surely, 2^22185812460 is an apocalyptic number.

22185812460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22185812460 is an abundant number, since it is smaller than the sum of its proper divisors (52545372180).

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

22185812460 is a wasteful number, since it uses less digits than its factorization.

22185812460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780215 (or 2780213 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The spelling of 22185812460 in words is "twenty-two billion, one hundred eighty-five million, eight hundred twelve thousand, four hundred sixty".