168906143306 has 4 divisors (see below), whose sum is σ = 253359214962. Its totient is φ = 84453071652.

The previous prime is 168906143299. The next prime is 168906143317. The reversal of 168906143306 is 603341609861.

168906143306 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 84919205281 + 83986938025 = 291409^2 + 289805^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42226535825 + ... + 42226535828.

Almost surely, 2^168906143306 is an apocalyptic number.

168906143306 is a deficient number, since it is larger than the sum of its proper divisors (84453071656).

168906143306 is an equidigital number, since it uses as much as digits as its factorization.

168906143306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84453071655.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 168906143306 in words is "one hundred sixty-eight billion, nine hundred six million, one hundred forty-three thousand, three hundred six".