168740359199 has 4 divisors (see below), whose sum is σ = 169143081240. Its totient is φ = 168337637160.

The previous prime is 168740359187. The next prime is 168740359231. The reversal of 168740359199 is 991953047861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 991953047861 = 575249 ⋅1724389.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168740359199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168740359169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201360392 + ... + 201361229.

It is an arithmetic number, because the mean of its divisors is an integer number (42285770310).

Almost surely, 2^168740359199 is an apocalyptic number.

168740359199 is a deficient number, since it is larger than the sum of its proper divisors (402722041).

168740359199 is an equidigital number, since it uses as much as digits as its factorization.

168740359199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402722040.

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 168740359199 in words is "one hundred sixty-eight billion, seven hundred forty million, three hundred fifty-nine thousand, one hundred ninety-nine".