16660776163 has 4 divisors (see below), whose sum is σ = 16832536840. Its totient is φ = 16489015488.

The previous prime is 16660776137. The next prime is 16660776241. The reversal of 16660776163 is 36167706661.

16660776163 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, and also an emirpimes, since its reverse is a distinct semiprime: 36167706661 = 174157 ⋅207673.

It is a cyclic number.

It is not a de Polignac number, because 16660776163 - 2¹³ = 16660767971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16660776263) 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, 85880193 + ... + 85880386.

It is an arithmetic number, because the mean of its divisors is an integer number (4208134210).

Almost surely, 2^16660776163 is an apocalyptic number.

16660776163 is a deficient number, since it is larger than the sum of its proper divisors (171760677).

16660776163 is an equidigital number, since it uses as much as digits as its factorization.

16660776163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171760676.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 16660776163 in words is "sixteen billion, six hundred sixty million, seven hundred seventy-six thousand, one hundred sixty-three".