18345570912 has 216 divisors, whose sum is σ = 54622530144. Its totient is φ = 5837916672.

The previous prime is 18345570899. The next prime is 18345570953. The reversal of 18345570912 is 21907554381.

18345570912 is a `hidden beast` number, since 1 + 8 + 3 + 4 + 557 + 0 + 91 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 25027698 + ... + 25028430.

It is an arithmetic number, because the mean of its divisors is an integer number (252882084).

Almost surely, 2^18345570912 is an apocalyptic number.

18345570912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18345570912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27311265072).

18345570912 is an abundant number, since it is smaller than the sum of its proper divisors (36276959232).

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

18345570912 is a wasteful number, since it uses less digits than its factorization.

18345570912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 18345570912 in words is "eighteen billion, three hundred forty-five million, five hundred seventy thousand, nine hundred twelve".