22768818488 has 64 divisors (see below), whose sum is σ = 50358672000. Its totient is φ = 9549453312.

The previous prime is 22768818481. The next prime is 22768818491. The reversal of 22768818488 is 88481886722.

It is a super-2 number, since 2×22768818488² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22768818488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22768818481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170768 + ... + 273311.

It is an arithmetic number, because the mean of its divisors is an integer number (786854250).

Almost surely, 2^22768818488 is an apocalyptic number.

It is an amenable number.

22768818488 is an abundant number, since it is smaller than the sum of its proper divisors (27589853512).

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

22768818488 is a wasteful number, since it uses less digits than its factorization.

22768818488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444144 (or 444140 counting only the distinct ones).

The product of its digits is 22020096, while the sum is 62.

The spelling of 22768818488 in words is "twenty-two billion, seven hundred sixty-eight million, eight hundred eighteen thousand, four hundred eighty-eight".