22720475500 has 48 divisors (see below), whose sum is σ = 52233199200. Its totient is φ = 8609860800.

The previous prime is 22720475483. The next prime is 22720475507. The reversal of 22720475500 is 557402722.

It is a happy number.

It is a super-2 number, since 2×22720475500² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22720475507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1186315 + ... + 1205314.

It is an arithmetic number, because the mean of its divisors is an integer number (1088191650).

Almost surely, 2^22720475500 is an apocalyptic number.

22720475500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22720475500 is an abundant number, since it is smaller than the sum of its proper divisors (29512723700).

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

22720475500 is a wasteful number, since it uses less digits than its factorization.

22720475500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391667 (or 2391655 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 34.

The spelling of 22720475500 in words is "twenty-two billion, seven hundred twenty million, four hundred seventy-five thousand, five hundred".