16066803617806 has 4 divisors (see below), whose sum is σ = 24100205426712. Its totient is φ = 8033401808902.

The previous prime is 16066803617797. The next prime is 16066803617867. The reversal of 16066803617806 is 60871630866061.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4016700904450 + ... + 4016700904453.

It is an arithmetic number, because the mean of its divisors is an integer number (6025051356678).

Almost surely, 2^{16066803617806} is an apocalyptic number.

16066803617806 is a deficient number, since it is larger than the sum of its proper divisors (8033401808906).

16066803617806 is an equidigital number, since it uses as much as digits as its factorization.

16066803617806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8033401808905.

The product of its (nonzero) digits is 10450944, while the sum is 58.

The spelling of 16066803617806 in words is "sixteen trillion, sixty-six billion, eight hundred three million, six hundred seventeen thousand, eight hundred six".