22218406760 has 128 divisors (see below), whose sum is σ = 57377859840. Its totient is φ = 7669094400.

The previous prime is 22218406759. The next prime is 22218406787. The reversal of 22218406760 is 6760481222.

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, 650837 + ... + 684123.

It is an arithmetic number, because the mean of its divisors is an integer number (448264530).

Almost surely, 2^22218406760 is an apocalyptic number.

22218406760 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 22218406760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28688929920).

22218406760 is an abundant number, since it is smaller than the sum of its proper divisors (35159453080).

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

22218406760 is a wasteful number, since it uses less digits than its factorization.

22218406760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33387 (or 33383 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

Adding to 22218406760 its reverse (6760481222), we get a palindrome (28978887982).

The spelling of 22218406760 in words is "twenty-two billion, two hundred eighteen million, four hundred six thousand, seven hundred sixty".