16665330263 has 2 divisors, whose sum is σ = 16665330264. Its totient is φ = 16665330262.

The previous prime is 16665330239. The next prime is 16665330277. The reversal of 16665330263 is 36203356661.

16665330263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16665330263 - 2²⁶ = 16598221399 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16665330263.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16665330763) 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, 8332665131 + 8332665132.

It is an arithmetic number, because the mean of its divisors is an integer number (8332665132).

Almost surely, 2^16665330263 is an apocalyptic number.

16665330263 is a deficient number, since it is larger than the sum of its proper divisors (1).

16665330263 is an equidigital number, since it uses as much as digits as its factorization.

16665330263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 349920, while the sum is 41.

The spelling of 16665330263 in words is "sixteen billion, six hundred sixty-five million, three hundred thirty thousand, two hundred sixty-three".