2666366063 has 4 divisors (see below), whose sum is σ = 2691285480. Its totient is φ = 2641446648.

The previous prime is 2666365993. The next prime is 2666366069. The reversal of 2666366063 is 3606636662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3606636662 = 2 ⋅1803318331.

It is a cyclic number.

It is not a de Polignac number, because 2666366063 - 2¹² = 2666361967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666366069) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12459548 + ... + 12459761.

It is an arithmetic number, because the mean of its divisors is an integer number (672821370).

Almost surely, 2^2666366063 is an apocalyptic number.

2666366063 is a deficient number, since it is larger than the sum of its proper divisors (24919417).

2666366063 is a wasteful number, since it uses less digits than its factorization.

2666366063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24919416.

The product of its (nonzero) digits is 839808, while the sum is 44.

The square root of 2666366063 is about 51636.8672849157. The cubic root of 2666366063 is about 1386.6704400079.

The spelling of 2666366063 in words is "two billion, six hundred sixty-six million, three hundred sixty-six thousand, sixty-three".