19852552171 has 2 divisors, whose sum is σ = 19852552172. Its totient is φ = 19852552170.

The previous prime is 19852552157. The next prime is 19852552177. The reversal of 19852552171 is 17125525891.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19852552171 - 2¹⁹ = 19852027883 is a prime.

It is not a weakly prime, because it can be changed into another prime (19852552177) 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, 9926276085 + 9926276086.

It is an arithmetic number, because the mean of its divisors is an integer number (9926276086).

Almost surely, 2^19852552171 is an apocalyptic number.

19852552171 is a deficient number, since it is larger than the sum of its proper divisors (1).

19852552171 is an equidigital number, since it uses as much as digits as its factorization.

19852552171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252000, while the sum is 46.

The spelling of 19852552171 in words is "nineteen billion, eight hundred fifty-two million, five hundred fifty-two thousand, one hundred seventy-one".