22661911782888 has 64 divisors (see below), whose sum is σ = 64756210800000. Its totient is φ = 6474042796032.

The previous prime is 22661911782883. The next prime is 22661911782889. The reversal of 22661911782888 is 88828711916622.

It is not an unprimeable number, because it can be changed into a prime (22661911782883) 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, 6837013 + ... + 9595236.

It is an arithmetic number, because the mean of its divisors is an integer number (1011815793750).

Almost surely, 2^{22661911782888} is an apocalyptic number.

22661911782888 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22661911782888 is an abundant number, since it is smaller than the sum of its proper divisors (42094299017112).

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

22661911782888 is a wasteful number, since it uses less digits than its factorization.

22661911782888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16440474 (or 16440470 counting only the distinct ones).

The product of its digits is 74317824, while the sum is 69.

The spelling of 22661911782888 in words is "twenty-two trillion, six hundred sixty-one billion, nine hundred eleven million, seven hundred eighty-two thousand, eight hundred eighty-eight".