16172317433 has 2 divisors, whose sum is σ = 16172317434. Its totient is φ = 16172317432.

The previous prime is 16172317327. The next prime is 16172317459. The reversal of 16172317433 is 33471327161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8879669824 + 7292647609 = 94232^2 + 85397^2 .

It is a cyclic number.

It is not a de Polignac number, because 16172317433 - 2⁸ = 16172317177 is a prime.

It is not a weakly prime, because it can be changed into another prime (16172307433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8086158716 + 8086158717.

It is an arithmetic number, because the mean of its divisors is an integer number (8086158717).

Almost surely, 2^16172317433 is an apocalyptic number.

It is an amenable number.

16172317433 is a deficient number, since it is larger than the sum of its proper divisors (1).

16172317433 is an equidigital number, since it uses as much as digits as its factorization.

16172317433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 38.

The spelling of 16172317433 in words is "sixteen billion, one hundred seventy-two million, three hundred seventeen thousand, four hundred thirty-three".