16466409388823 has 2 divisors, whose sum is σ = 16466409388824. Its totient is φ = 16466409388822.

The previous prime is 16466409388789. The next prime is 16466409388859. The reversal of 16466409388823 is 32888390466461.

It is a weak prime.

It is an emirp because it is prime and its reverse (32888390466461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16466409388823 - 2⁸ = 16466409388567 is a prime.

It is a super-2 number, since 2×16466409388823² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16466409388873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8233204694411 + 8233204694412.

It is an arithmetic number, because the mean of its divisors is an integer number (8233204694412).

Almost surely, 2^{16466409388823} is an apocalyptic number.

16466409388823 is a deficient number, since it is larger than the sum of its proper divisors (1).

16466409388823 is an equidigital number, since it uses as much as digits as its factorization.

16466409388823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 286654464, while the sum is 68.

The spelling of 16466409388823 in words is "sixteen trillion, four hundred sixty-six billion, four hundred nine million, three hundred eighty-eight thousand, eight hundred twenty-three".