22541115044 has 72 divisors (see below), whose sum is σ = 48436940160. Its totient is φ = 9126540864.

The previous prime is 22541115029. The next prime is 22541115049. The reversal of 22541115044 is 44051114522.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22541114998 and 22541115016.

It is not an unprimeable number, because it can be changed into a prime (22541115049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1358462 + ... + 1374954.

It is an arithmetic number, because the mean of its divisors is an integer number (672735280).

Almost surely, 2^22541115044 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 22541115044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24218470080).

22541115044 is an abundant number, since it is smaller than the sum of its proper divisors (25895825116).

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

22541115044 is a wasteful number, since it uses less digits than its factorization.

22541115044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16897 (or 16888 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 22541115044 its reverse (44051114522), we get a palindrome (66592229566).

The spelling of 22541115044 in words is "twenty-two billion, five hundred forty-one million, one hundred fifteen thousand, forty-four".