168739343064 has 48 divisors (see below), whose sum is σ = 481055148600. Its totient is φ = 53286107904.

The previous prime is 168739343063. The next prime is 168739343089. The reversal of 168739343064 is 460343937861.

It is a happy number.

168739343064 is a `hidden beast` number, since 1 + 68 + 7 + 3 + 93 + 430 + 64 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 168739343064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168739343063) 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 11 ways as a sum of consecutive naturals, for example, 61672369 + ... + 61675104.

Almost surely, 2^168739343064 is an apocalyptic number.

It is an amenable number.

168739343064 is an abundant number, since it is smaller than the sum of its proper divisors (312315805536).

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

168739343064 is a wasteful number, since it uses less digits than its factorization.

168739343064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123347504 (or 123347497 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 168739343064 in words is "one hundred sixty-eight billion, seven hundred thirty-nine million, three hundred forty-three thousand, sixty-four".