168040426219 has 2 divisors, whose sum is σ = 168040426220. Its totient is φ = 168040426218.

The previous prime is 168040426207. The next prime is 168040426261. The reversal of 168040426219 is 912624040861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 168040426219 - 2²⁵ = 168006871787 is a prime.

It is a super-2 number, since 2×168040426219² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (168040426319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84020213109 + 84020213110.

It is an arithmetic number, because the mean of its divisors is an integer number (84020213110).

Almost surely, 2^168040426219 is an apocalyptic number.

168040426219 is a deficient number, since it is larger than the sum of its proper divisors (1).

168040426219 is an equidigital number, since it uses as much as digits as its factorization.

168040426219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 168040426219 in words is "one hundred sixty-eight billion, forty million, four hundred twenty-six thousand, two hundred nineteen".