22566778900 has 36 divisors (see below), whose sum is σ = 51099041952. Its totient is φ = 8634244960.

The previous prime is 22566778867. The next prime is 22566778907. The reversal of 22566778900 is 987766522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22566778907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4903522 + ... + 4908121.

It is an arithmetic number, because the mean of its divisors is an integer number (1419417832).

Almost surely, 2^22566778900 is an apocalyptic number.

22566778900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22566778900 is an abundant number, since it is smaller than the sum of its proper divisors (28532263052).

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

22566778900 is a wasteful number, since it uses less digits than its factorization.

22566778900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9811680 (or 9811673 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 22566778900 in words is "twenty-two billion, five hundred sixty-six million, seven hundred seventy-eight thousand, nine hundred".