168366621340799 has 24 divisors (see below), whose sum is σ = 203139997851168. Its totient is φ = 139023625406400.

The previous prime is 168366621340789. The next prime is 168366621340823. The reversal of 168366621340799 is 997043126663861.

It is a de Polignac number, because none of the positive numbers 2^k-168366621340799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168366621340789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 459551099 + ... + 459917324.

It is an arithmetic number, because the mean of its divisors is an integer number (8464166577132).

Almost surely, 2^{168366621340799} is an apocalyptic number.

168366621340799 is a deficient number, since it is larger than the sum of its proper divisors (34773376510369).

168366621340799 is a wasteful number, since it uses less digits than its factorization.

168366621340799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919468575 (or 919468568 counting only the distinct ones).

The product of its (nonzero) digits is 423263232, while the sum is 71.

The spelling of 168366621340799 in words is "one hundred sixty-eight trillion, three hundred sixty-six billion, six hundred twenty-one million, three hundred forty thousand, seven hundred ninety-nine".