168732438337 has 4 divisors (see below), whose sum is σ = 168850187460. Its totient is φ = 168614689216.

The previous prime is 168732438323. The next prime is 168732438349. The reversal of 168732438337 is 733834237861.

It is a happy number.

168732438337 is digitally balanced in base 2, 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 2 ways, for example, as 156941953281 + 11790485056 = 396159^2 + 108584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168732438337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168732438037) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 58872412 + ... + 58875277.

It is an arithmetic number, because the mean of its divisors is an integer number (42212546865).

Almost surely, 2^168732438337 is an apocalyptic number.

It is an amenable number.

168732438337 is a deficient number, since it is larger than the sum of its proper divisors (117749123).

168732438337 is a wasteful number, since it uses less digits than its factorization.

168732438337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117749122.

The product of its digits is 12192768, while the sum is 55.

The spelling of 168732438337 in words is "one hundred sixty-eight billion, seven hundred thirty-two million, four hundred thirty-eight thousand, three hundred thirty-seven".