17995471187 has 2 divisors, whose sum is σ = 17995471188. Its totient is φ = 17995471186.

The previous prime is 17995471157. The next prime is 17995471189. The reversal of 17995471187 is 78117459971.

It is a strong prime.

It is an emirp because it is prime and its reverse (78117459971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17995471187 - 2¹⁶ = 17995405651 is a prime.

Together with 17995471189, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (17995471189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8997735593 + 8997735594.

It is an arithmetic number, because the mean of its divisors is an integer number (8997735594).

Almost surely, 2^17995471187 is an apocalyptic number.

17995471187 is a deficient number, since it is larger than the sum of its proper divisors (1).

17995471187 is an equidigital number, since it uses as much as digits as its factorization.

17995471187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4445280, while the sum is 59.

The spelling of 17995471187 in words is "seventeen billion, nine hundred ninety-five million, four hundred seventy-one thousand, one hundred eighty-seven".