5166813666 has 32 divisors (see below), whose sum is σ = 11835745920. Its totient is φ = 1472996736.

The previous prime is 5166813653. The next prime is 5166813683. The reversal of 5166813666 is 6663186615.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115401 + ... + 153788.

It is an arithmetic number, because the mean of its divisors is an integer number (369867060).

Almost surely, 2^5166813666 is an apocalyptic number.

5166813666 is an abundant number, since it is smaller than the sum of its proper divisors (6668932254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5166813666 is a wasteful number, since it uses less digits than its factorization.

5166813666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269658.

The product of its digits is 933120, while the sum is 48.

The square root of 5166813666 is about 71880.5513751808. The cubic root of 5166813666 is about 1728.7847910668.

The spelling of 5166813666 in words is "five billion, one hundred sixty-six million, eight hundred thirteen thousand, six hundred sixty-six".