168433518340 has 48 divisors (see below), whose sum is σ = 375698563632. Its totient is φ = 63210192896.

The previous prime is 168433518329. The next prime is 168433518457. The reversal of 168433518340 is 43815334861.

168433518340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2649366784 + 165784151556 = 51472^2 + 407166^2 .

It is a super-2 number, since 2×168433518340² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 673597 + ... + 889156.

It is an arithmetic number, because the mean of its divisors is an integer number (7827053409).

Almost surely, 2^168433518340 is an apocalyptic number.

168433518340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168433518340 is an abundant number, since it is smaller than the sum of its proper divisors (207265045292).

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

168433518340 is a wasteful number, since it uses less digits than its factorization.

168433518340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563096 (or 1563094 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 168433518340 in words is "one hundred sixty-eight billion, four hundred thirty-three million, five hundred eighteen thousand, three hundred forty".