168345787212 has 120 divisors (see below), whose sum is σ = 442645289856. Its totient is φ = 55790042112.

The previous prime is 168345787187. The next prime is 168345787231. The reversal of 168345787212 is 212787543861.

168345787212 is a `hidden beast` number, since 1 + 6 + 8 + 345 + 7 + 87 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 99201148 + ... + 99202844.

Almost surely, 2^168345787212 is an apocalyptic number.

168345787212 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 168345787212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221322644928).

168345787212 is an abundant number, since it is smaller than the sum of its proper divisors (274299502644).

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

168345787212 is a wasteful number, since it uses less digits than its factorization.

168345787212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3309 (or 3298 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The spelling of 168345787212 in words is "one hundred sixty-eight billion, three hundred forty-five million, seven hundred eighty-seven thousand, two hundred twelve".