22721273604 has 24 divisors (see below), whose sum is σ = 58907005920. Its totient is φ = 7573757832.

The previous prime is 22721273593. The next prime is 22721273767. The reversal of 22721273604 is 40637212722.

It is a happy number.

22721273604 is a `hidden beast` number, since 2 + 2 + 7 + 21 + 27 + 3 + 604 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105190974 + ... + 105191189.

It is an arithmetic number, because the mean of its divisors is an integer number (2454458580).

Almost surely, 2^22721273604 is an apocalyptic number.

It is an amenable number.

22721273604 is an abundant number, since it is smaller than the sum of its proper divisors (36185732316).

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

22721273604 is a wasteful number, since it uses less digits than its factorization.

22721273604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210382176 (or 210382168 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The spelling of 22721273604 in words is "twenty-two billion, seven hundred twenty-one million, two hundred seventy-three thousand, six hundred four".