18222550880 has 24 divisors (see below), whose sum is σ = 43050776832. Its totient is φ = 7289020288.

The previous prime is 18222550877. The next prime is 18222550891. The reversal of 18222550880 is 8805522281.

It is a super-2 number, since 2×18222550880² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56945312 + ... + 56945631.

It is an arithmetic number, because the mean of its divisors is an integer number (1793782368).

Almost surely, 2^18222550880 is an apocalyptic number.

18222550880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18222550880 is an abundant number, since it is smaller than the sum of its proper divisors (24828225952).

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

18222550880 is a wasteful number, since it uses less digits than its factorization.

18222550880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113890958 (or 113890950 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 41.

The spelling of 18222550880 in words is "eighteen billion, two hundred twenty-two million, five hundred fifty thousand, eight hundred eighty".