18055842012 has 36 divisors (see below), whose sum is σ = 49152015640. Its totient is φ = 5555643552.

The previous prime is 18055841983. The next prime is 18055842023. The reversal of 18055842012 is 21024855081.

18055842012 is a `hidden beast` number, since 1 + 80 + 558 + 4 + 20 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19289962 + ... + 19290897.

Almost surely, 2^18055842012 is an apocalyptic number.

18055842012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18055842012 is an abundant number, since it is smaller than the sum of its proper divisors (31096173628).

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

18055842012 is a wasteful number, since it uses less digits than its factorization.

18055842012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38580882 (or 38580877 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The spelling of 18055842012 in words is "eighteen billion, fifty-five million, eight hundred forty-two thousand, twelve".