16998414997 has 2 divisors, whose sum is σ = 16998414998. Its totient is φ = 16998414996.

The previous prime is 16998414991. The next prime is 16998415061. The reversal of 16998414997 is 79941489961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16334373636 + 664041361 = 127806^2 + 25769^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16998414997 is a prime.

It is a super-3 number, since 3×16998414997³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16998414991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8499207498 + 8499207499.

It is an arithmetic number, because the mean of its divisors is an integer number (8499207499).

Almost surely, 2^16998414997 is an apocalyptic number.

It is an amenable number.

16998414997 is a deficient number, since it is larger than the sum of its proper divisors (1).

16998414997 is an equidigital number, since it uses as much as digits as its factorization.

16998414997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35271936, while the sum is 67.

The spelling of 16998414997 in words is "sixteen billion, nine hundred ninety-eight million, four hundred fourteen thousand, nine hundred ninety-seven".