66246565163 has 4 divisors (see below), whose sum is σ = 68383551168. Its totient is φ = 64109579160.

The previous prime is 66246565127. The next prime is 66246565169. The reversal of 66246565163 is 36156564266.

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 66246565163 - 2¹² = 66246561067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66246565169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1068492956 + ... + 1068493017.

It is an arithmetic number, because the mean of its divisors is an integer number (17095887792).

Almost surely, 2^66246565163 is an apocalyptic number.

66246565163 is a deficient number, since it is larger than the sum of its proper divisors (2136986005).

66246565163 is a wasteful number, since it uses less digits than its factorization.

66246565163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136986004.

The product of its digits is 4665600, while the sum is 50.

The spelling of 66246565163 in words is "sixty-six billion, two hundred forty-six million, five hundred sixty-five thousand, one hundred sixty-three".