16666800801 has 64 divisors (see below), whose sum is σ = 26989977600. Its totient is φ = 8946798336.

The previous prime is 16666800763. The next prime is 16666800851. The reversal of 16666800801 is 10800866661.

16666800801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16666800801 - 2¹⁸ = 16666538657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16666800851) 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 in 63 ways as a sum of consecutive naturals, for example, 5121891 + ... + 5125143.

It is an arithmetic number, because the mean of its divisors is an integer number (421718400).

Almost surely, 2^16666800801 is an apocalyptic number.

It is an amenable number.

16666800801 is a deficient number, since it is larger than the sum of its proper divisors (10323176799).

16666800801 is a wasteful number, since it uses less digits than its factorization.

16666800801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3518.

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 16666800801 in words is "sixteen billion, six hundred sixty-six million, eight hundred thousand, eight hundred one".