169126433609 has 16 divisors (see below), whose sum is σ = 193546590336. Its totient is φ = 144771235200.

The previous prime is 169126433599. The next prime is 169126433627. The reversal of 169126433609 is 906334621961.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-169126433609 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169126433689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18456989 + ... + 18466149.

It is an arithmetic number, because the mean of its divisors is an integer number (12096661896).

Almost surely, 2^169126433609 is an apocalyptic number.

It is an amenable number.

169126433609 is a deficient number, since it is larger than the sum of its proper divisors (24420156727).

169126433609 is a wasteful number, since it uses less digits than its factorization.

169126433609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12416.

The product of its (nonzero) digits is 1259712, while the sum is 50.

The spelling of 169126433609 in words is "one hundred sixty-nine billion, one hundred twenty-six million, four hundred thirty-three thousand, six hundred nine".