22003658880 has 128 divisors (see below), whose sum is σ = 80156234880. Its totient is φ = 5029404672.

The previous prime is 22003658879. The next prime is 22003658891. The reversal of 22003658880 is 8885630022.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×22003658880² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 805149 + ... + 832028.

It is an arithmetic number, because the mean of its divisors is an integer number (626220585).

Almost surely, 2^22003658880 is an apocalyptic number.

22003658880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22003658880 is an abundant number, since it is smaller than the sum of its proper divisors (58152576000).

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

22003658880 is a wasteful number, since it uses less digits than its factorization.

22003658880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637206 (or 1637194 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 22003658880 in words is "twenty-two billion, three million, six hundred fifty-eight thousand, eight hundred eighty".