18085371072 has 28 divisors (see below), whose sum is σ = 47850878136. Its totient is φ = 6028456960.

The previous prime is 18085371061. The next prime is 18085371091. The reversal of 18085371072 is 27017358081.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47097129 + ... + 47097512.

Almost surely, 2^18085371072 is an apocalyptic number.

18085371072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18085371072 is an abundant number, since it is smaller than the sum of its proper divisors (29765507064).

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

18085371072 is an equidigital number, since it uses as much as digits as its factorization.

18085371072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94194656 (or 94194646 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 18085371072 in words is "eighteen billion, eighty-five million, three hundred seventy-one thousand, seventy-two".