22491698920 has 32 divisors (see below), whose sum is σ = 50616796320. Its totient is φ = 8994817600.

The previous prime is 22491698899. The next prime is 22491698939. The reversal of 22491698920 is 2989619422.

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, 146379 + ... + 257701.

It is an arithmetic number, because the mean of its divisors is an integer number (1581774885).

Almost surely, 2^22491698920 is an apocalyptic number.

22491698920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22491698920 is an abundant number, since it is smaller than the sum of its proper divisors (28125097400).

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

22491698920 is a wasteful number, since it uses less digits than its factorization.

22491698920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116385 (or 116381 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 22491698920 in words is "twenty-two billion, four hundred ninety-one million, six hundred ninety-eight thousand, nine hundred twenty".