22729798868 has 12 divisors (see below), whose sum is σ = 45459597792. Its totient is φ = 9741342360.

The previous prime is 22729798849. The next prime is 22729798909. The reversal of 22729798868 is 86889792722.

22729798868 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 22729798798 and 22729798807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405889238 + ... + 405889293.

It is an arithmetic number, because the mean of its divisors is an integer number (3788299816).

Almost surely, 2^22729798868 is an apocalyptic number.

22729798868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22729798868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22729798868 is a wasteful number, since it uses less digits than its factorization.

22729798868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811778542 (or 811778540 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 68.

The spelling of 22729798868 in words is "twenty-two billion, seven hundred twenty-nine million, seven hundred ninety-eight thousand, eight hundred sixty-eight".