17984429971 has 2 divisors, whose sum is σ = 17984429972. Its totient is φ = 17984429970.

The previous prime is 17984429959. The next prime is 17984429989. The reversal of 17984429971 is 17992448971.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17984429971 - 2¹³ = 17984421779 is a prime.

It is not a weakly prime, because it can be changed into another prime (17984429921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8992214985 + 8992214986.

It is an arithmetic number, because the mean of its divisors is an integer number (8992214986).

Almost surely, 2^17984429971 is an apocalyptic number.

17984429971 is a deficient number, since it is larger than the sum of its proper divisors (1).

17984429971 is an equidigital number, since it uses as much as digits as its factorization.

17984429971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 61.

The spelling of 17984429971 in words is "seventeen billion, nine hundred eighty-four million, four hundred twenty-nine thousand, nine hundred seventy-one".