17943345499 has 2 divisors, whose sum is σ = 17943345500. Its totient is φ = 17943345498.

The previous prime is 17943345481. The next prime is 17943345527. The reversal of 17943345499 is 99454334971.

It is a weak prime.

It is an emirp because it is prime and its reverse (99454334971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17943345499 - 2¹⁵ = 17943312731 is a prime.

It is not a weakly prime, because it can be changed into another prime (17943345439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8971672749 + 8971672750.

It is an arithmetic number, because the mean of its divisors is an integer number (8971672750).

Almost surely, 2^17943345499 is an apocalyptic number.

17943345499 is a deficient number, since it is larger than the sum of its proper divisors (1).

17943345499 is an equidigital number, since it uses as much as digits as its factorization.

17943345499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14696640, while the sum is 58.

The spelling of 17943345499 in words is "seventeen billion, nine hundred forty-three million, three hundred forty-five thousand, four hundred ninety-nine".