18085370880 has 88 divisors (see below), whose sum is σ = 57844977552. Its totient is φ = 4822761472.

The previous prime is 18085370873. The next prime is 18085370917. The reversal of 18085370880 is 8807358081.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 573357 + ... + 604076.

Almost surely, 2^18085370880 is an apocalyptic number.

18085370880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18085370880 is an abundant number, since it is smaller than the sum of its proper divisors (39759606672).

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

18085370880 is a wasteful number, since it uses less digits than its factorization.

18085370880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177461 (or 1177443 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 48.

The spelling of 18085370880 in words is "eighteen billion, eighty-five million, three hundred seventy thousand, eight hundred eighty".