22018040920 has 32 divisors (see below), whose sum is σ = 49631209200. Its totient is φ = 8791106688.

The previous prime is 22018040879. The next prime is 22018040923. The reversal of 22018040920 is 2904081022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22018040923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 481275 + ... + 525034.

Almost surely, 2^22018040920 is an apocalyptic number.

22018040920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22018040920 is an abundant number, since it is smaller than the sum of its proper divisors (27613168280).

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

22018040920 is a wasteful number, since it uses less digits than its factorization.

22018040920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006867 (or 1006863 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 22018040920 in words is "twenty-two billion, eighteen million, forty thousand, nine hundred twenty".