16450716671999 has 4 divisors (see below), whose sum is σ = 16472977453080. Its totient is φ = 16428455890920.

The previous prime is 16450716671993. The next prime is 16450716672043. The reversal of 16450716671999 is 99917661705461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16450716671999 - 2⁸ = 16450716671743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16450716671993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11130389432 + ... + 11130390909.

It is an arithmetic number, because the mean of its divisors is an integer number (4118244363270).

Almost surely, 2^{16450716671999} is an apocalyptic number.

16450716671999 is a deficient number, since it is larger than the sum of its proper divisors (22260781081).

16450716671999 is an equidigital number, since it uses as much as digits as its factorization.

16450716671999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22260781080.

The product of its (nonzero) digits is 154314720, while the sum is 71.

The spelling of 16450716671999 in words is "sixteen trillion, four hundred fifty billion, seven hundred sixteen million, six hundred seventy-one thousand, nine hundred ninety-nine".