168040726489 has 12 divisors (see below), whose sum is σ = 186268109184. Its totient is φ = 151279625024.

The previous prime is 168040726487. The next prime is 168040726559. The reversal of 168040726489 is 984627040861.

It is a happy number.

168040726489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168040726489 - 2¹ = 168040726487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168040726487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12633697 + ... + 12646990.

It is an arithmetic number, because the mean of its divisors is an integer number (15522342432).

Almost surely, 2^168040726489 is an apocalyptic number.

It is an amenable number.

168040726489 is a deficient number, since it is larger than the sum of its proper divisors (18227382695).

168040726489 is a wasteful number, since it uses less digits than its factorization.

168040726489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25280744 (or 25280727 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 168040726489 in words is "one hundred sixty-eight billion, forty million, seven hundred twenty-six thousand, four hundred eighty-nine".