168397790433 has 8 divisors (see below), whose sum is σ = 225329428896. Its totient is φ = 111865672800.

The previous prime is 168397790401. The next prime is 168397790447. The reversal of 168397790433 is 334097793861.

It is a happy number.

168397790433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 168397790433 - 2⁵ = 168397790401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168347790433) 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 7 ways as a sum of consecutive naturals, for example, 99879223 + ... + 99880908.

It is an arithmetic number, because the mean of its divisors is an integer number (28166178612).

Almost surely, 2^168397790433 is an apocalyptic number.

It is an amenable number.

168397790433 is a deficient number, since it is larger than the sum of its proper divisors (56931638463).

168397790433 is a wasteful number, since it uses less digits than its factorization.

168397790433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199760415.

The product of its (nonzero) digits is 20575296, while the sum is 60.

The spelling of 168397790433 in words is "one hundred sixty-eight billion, three hundred ninety-seven million, seven hundred ninety thousand, four hundred thirty-three".