16660698833287 has 2 divisors, whose sum is σ = 16660698833288. Its totient is φ = 16660698833286.

The previous prime is 16660698833281. The next prime is 16660698833327. The reversal of 16660698833287 is 78233889606661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16660698833287 is a prime.

It is a super-2 number, since 2×16660698833287² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16660698833281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8330349416643 + 8330349416644.

It is an arithmetic number, because the mean of its divisors is an integer number (8330349416644).

Almost surely, 2^{16660698833287} is an apocalyptic number.

16660698833287 is a deficient number, since it is larger than the sum of its proper divisors (1).

16660698833287 is an equidigital number, since it uses as much as digits as its factorization.

16660698833287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 752467968, while the sum is 73.

The spelling of 16660698833287 in words is "sixteen trillion, six hundred sixty billion, six hundred ninety-eight million, eight hundred thirty-three thousand, two hundred eighty-seven".