168423869436 has 48 divisors (see below), whose sum is σ = 410209497600. Its totient is φ = 53682818112.

The previous prime is 168423869399. The next prime is 168423869461. The reversal of 168423869436 is 634968324861.

It is a self number, because there is not a number n which added to its sum of digits gives 168423869436.

It is a congruent number.

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, 759945 + ... + 956223.

It is an arithmetic number, because the mean of its divisors is an integer number (8546031200).

Almost surely, 2^168423869436 is an apocalyptic number.

It is an amenable number.

168423869436 is an abundant number, since it is smaller than the sum of its proper divisors (241785628164).

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

168423869436 is a wasteful number, since it uses less digits than its factorization.

168423869436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199418 (or 199416 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 60.

The spelling of 168423869436 in words is "one hundred sixty-eight billion, four hundred twenty-three million, eight hundred sixty-nine thousand, four hundred thirty-six".