18766132812 has 144 divisors (see below), whose sum is σ = 58160444160. Its totient is φ = 5176809792.

The previous prime is 18766132807. The next prime is 18766132817. The reversal of 18766132812 is 21823166781.

18766132812 is a `hidden beast` number, since 1 + 8 + 7 + 6 + 613 + 28 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (18766132807) and next prime (18766132817).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18766132817) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 149763 + ... + 244869.

Almost surely, 2^18766132812 is an apocalyptic number.

18766132812 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 18766132812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29080222080).

18766132812 is an abundant number, since it is smaller than the sum of its proper divisors (39394311348).

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

18766132812 is a wasteful number, since it uses less digits than its factorization.

18766132812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95162 (or 95148 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The spelling of 18766132812 in words is "eighteen billion, seven hundred sixty-six million, one hundred thirty-two thousand, eight hundred twelve".