15172105171 has 2 divisors, whose sum is σ = 15172105172. Its totient is φ = 15172105170.

The previous prime is 15172105159. The next prime is 15172105199. The reversal of 15172105171 is 17150127151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15172105171 - 2⁹ = 15172104659 is a prime.

It is not a weakly prime, because it can be changed into another prime (15172102171) 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 as a sum of consecutive naturals, namely, 7586052585 + 7586052586.

It is an arithmetic number, because the mean of its divisors is an integer number (7586052586).

Almost surely, 2^15172105171 is an apocalyptic number.

15172105171 is a deficient number, since it is larger than the sum of its proper divisors (1).

15172105171 is an equidigital number, since it uses as much as digits as its factorization.

15172105171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2450, while the sum is 31.

The spelling of 15172105171 in words is "fifteen billion, one hundred seventy-two million, one hundred five thousand, one hundred seventy-one".