22891143888 has 160 divisors (see below), whose sum is σ = 66902860800. Its totient is φ = 7492155264.

The previous prime is 22891143887. The next prime is 22891143901. The reversal of 22891143888 is 88834119822.

It is a super-2 number, since 2×22891143888² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22891143887) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10389795 + ... + 10391997.

It is an arithmetic number, because the mean of its divisors is an integer number (418142880).

Almost surely, 2^22891143888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22891143888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33451430400).

22891143888 is an abundant number, since it is smaller than the sum of its proper divisors (44011716912).

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

22891143888 is a wasteful number, since it uses less digits than its factorization.

22891143888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646 (or 2634 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 54.

The spelling of 22891143888 in words is "twenty-two billion, eight hundred ninety-one million, one hundred forty-three thousand, eight hundred eighty-eight".