366665566663 has 8 divisors (see below), whose sum is σ = 400003200000. Its totient is φ = 333328666680.

The previous prime is 366665566637. The next prime is 366665566691.

It is a happy number.

366665566663 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-366665566663 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 366665566595 and 366665566604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366665566693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1733338 + ... + 1933336.

It is an arithmetic number, because the mean of its divisors is an integer number (50000400000).

Almost surely, 2^366665566663 is an apocalyptic number.

366665566663 is a deficient number, since it is larger than the sum of its proper divisors (33337633337).

366665566663 is a wasteful number, since it uses less digits than its factorization.

366665566663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366677.

The product of its digits is 377913600, while the sum is 64.

The spelling of 366665566663 in words is "three hundred sixty-six billion, six hundred sixty-five million, five hundred sixty-six thousand, six hundred sixty-three".