168321137911 has 8 divisors (see below), whose sum is σ = 172105287984. Its totient is φ = 164578801920.

The previous prime is 168321137909. The next prime is 168321137923. The reversal of 168321137911 is 119731123861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168321137911 - 2¹ = 168321137909 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 (168321137951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10445380 + ... + 10461481.

It is an arithmetic number, because the mean of its divisors is an integer number (21513160998).

Almost surely, 2^168321137911 is an apocalyptic number.

168321137911 is a deficient number, since it is larger than the sum of its proper divisors (3784150073).

168321137911 is an equidigital number, since it uses as much as digits as its factorization.

168321137911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20907041.

The product of its digits is 54432, while the sum is 43.

The spelling of 168321137911 in words is "one hundred sixty-eight billion, three hundred twenty-one million, one hundred thirty-seven thousand, nine hundred eleven".