22681437720 has 64 divisors (see below), whose sum is σ = 71625600000. Its totient is φ = 5730046848.

The previous prime is 22681437703. The next prime is 22681437731. The reversal of 22681437720 is 2773418622.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 4971720 + ... + 4976279.

It is an arithmetic number, because the mean of its divisors is an integer number (1119150000).

Almost surely, 2^22681437720 is an apocalyptic number.

22681437720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22681437720 is an abundant number, since it is smaller than the sum of its proper divisors (48944162280).

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

22681437720 is a wasteful number, since it uses less digits than its factorization.

22681437720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9948032 (or 9948028 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The spelling of 22681437720 in words is "twenty-two billion, six hundred eighty-one million, four hundred thirty-seven thousand, seven hundred twenty".