168242137336 has 128 divisors (see below), whose sum is σ = 395584560000. Its totient is φ = 65311948800.

The previous prime is 168242137333. The next prime is 168242137337. The reversal of 168242137336 is 633731242861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168242137333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8298540 + ... + 8318788.

It is an arithmetic number, because the mean of its divisors is an integer number (3090504375).

Almost surely, 2^168242137336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168242137336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197792280000).

168242137336 is an abundant number, since it is smaller than the sum of its proper divisors (227342422664).

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

168242137336 is a wasteful number, since it uses less digits than its factorization.

168242137336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20489 (or 20485 counting only the distinct ones).

The product of its digits is 870912, while the sum is 46.

The spelling of 168242137336 in words is "one hundred sixty-eight billion, two hundred forty-two million, one hundred thirty-seven thousand, three hundred thirty-six".