18055943782120 has 32 divisors (see below), whose sum is σ = 40875112012320. Its totient is φ = 7178068445760.

The previous prime is 18055943782109. The next prime is 18055943782139. The reversal of 18055943782120 is 2128734955081.

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, 1384651746 + ... + 1384664785.

It is an arithmetic number, because the mean of its divisors is an integer number (1277347250385).

Almost surely, 2^{18055943782120} is an apocalyptic number.

18055943782120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18055943782120 is an abundant number, since it is smaller than the sum of its proper divisors (22819168230200).

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

18055943782120 is a wasteful number, since it uses less digits than its factorization.

18055943782120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769316705 (or 2769316701 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 18055943782120 in words is "eighteen trillion, fifty-five billion, nine hundred forty-three million, seven hundred eighty-two thousand, one hundred twenty".