22491358000 has 40 divisors (see below), whose sum is σ = 54384108480. Its totient is φ = 8996542400.

The previous prime is 22491357983. The next prime is 22491358033. The reversal of 22491358000 is 85319422.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×22491358000² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5620840 + ... + 5624839.

It is an arithmetic number, because the mean of its divisors is an integer number (1359602712).

Almost surely, 2^22491358000 is an apocalyptic number.

22491358000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22491358000 is an abundant number, since it is smaller than the sum of its proper divisors (31892750480).

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

22491358000 is a wasteful number, since it uses less digits than its factorization.

22491358000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11245702 (or 11245686 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 22491358000 in words is "twenty-two billion, four hundred ninety-one million, three hundred fifty-eight thousand".