22989311640 has 96 divisors (see below), whose sum is σ = 74954337120. Its totient is φ = 6110866944.

The previous prime is 22989311629. The next prime is 22989311663. The reversal of 22989311640 is 4611398922.

22989311640 is a `hidden beast` number, since 2 + 298 + 9 + 311 + 6 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10669 + ... + 214691.

It is an arithmetic number, because the mean of its divisors is an integer number (780774345).

Almost surely, 2^22989311640 is an apocalyptic number.

22989311640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22989311640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37477168560).

22989311640 is an abundant number, since it is smaller than the sum of its proper divisors (51965025480).

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

22989311640 is a wasteful number, since it uses less digits than its factorization.

22989311640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204353 (or 204346 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 22989311640 in words is "twenty-two billion, nine hundred eighty-nine million, three hundred eleven thousand, six hundred forty".