18275315815212 has 48 divisors (see below), whose sum is σ = 42704566686432. Its totient is φ = 6082894082560.

The previous prime is 18275315815181. The next prime is 18275315815291. The reversal of 18275315815212 is 21251851357281.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57547648 + ... + 57864344.

It is an arithmetic number, because the mean of its divisors is an integer number (889678472634).

Almost surely, 2^{18275315815212} is an apocalyptic number.

18275315815212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18275315815212 is an abundant number, since it is smaller than the sum of its proper divisors (24429250871220).

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

18275315815212 is a wasteful number, since it uses less digits than its factorization.

18275315815212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323698 (or 323696 counting only the distinct ones).

The product of its digits is 1344000, while the sum is 51.

The spelling of 18275315815212 in words is "eighteen trillion, two hundred seventy-five billion, three hundred fifteen million, eight hundred fifteen thousand, two hundred twelve".