22513322040 has 128 divisors (see below), whose sum is σ = 74612966400. Its totient is φ = 5388664320.

The previous prime is 22513322017. The next prime is 22513322059. The reversal of 22513322040 is 4022331522.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22513322040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3667 + ... + 212226.

It is an arithmetic number, because the mean of its divisors is an integer number (582913800).

Almost surely, 2^22513322040 is an apocalyptic number.

22513322040 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 22513322040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37306483200).

22513322040 is an abundant number, since it is smaller than the sum of its proper divisors (52099644360).

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

22513322040 is a wasteful number, since it uses less digits than its factorization.

22513322040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215997 (or 215993 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 22513322040 its reverse (4022331522), we get a palindrome (26535653562).

The spelling of 22513322040 in words is "twenty-two billion, five hundred thirteen million, three hundred twenty-two thousand, forty".