16610166563 has 4 divisors (see below), whose sum is σ = 16653993240. Its totient is φ = 16566339888.

The previous prime is 16610166499. The next prime is 16610166571. The reversal of 16610166563 is 36566101661.

16610166563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16610166563 - 2⁶ = 16610166499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16610166563.

It is not an unprimeable number, because it can be changed into a prime (16610166583) 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 3 ways as a sum of consecutive naturals, for example, 21912770 + ... + 21913527.

It is an arithmetic number, because the mean of its divisors is an integer number (4163498310).

Almost surely, 2^16610166563 is an apocalyptic number.

16610166563 is a deficient number, since it is larger than the sum of its proper divisors (43826677).

16610166563 is an equidigital number, since it uses as much as digits as its factorization.

16610166563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43826676.

The product of its (nonzero) digits is 116640, while the sum is 41.

The spelling of 16610166563 in words is "sixteen billion, six hundred ten million, one hundred sixty-six thousand, five hundred sixty-three".