22417218780 has 192 divisors, whose sum is σ = 72289566720. Its totient is φ = 5133369600.

The previous prime is 22417218779. The next prime is 22417218787. The reversal of 22417218780 is 8781271422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22417218787) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4599745 + ... + 4604615.

It is an arithmetic number, because the mean of its divisors is an integer number (376508160).

Almost surely, 2^22417218780 is an apocalyptic number.

22417218780 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 22417218780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36144783360).

22417218780 is an abundant number, since it is smaller than the sum of its proper divisors (49872347940).

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

22417218780 is a wasteful number, since it uses less digits than its factorization.

22417218780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5280 (or 5278 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 42.

The spelling of 22417218780 in words is "twenty-two billion, four hundred seventeen million, two hundred eighteen thousand, seven hundred eighty".