66336663366 has 16 divisors (see below), whose sum is σ = 147414807600. Its totient is φ = 22112221104.

The previous prime is 66336663329. The next prime is 66336663391.

66336663366 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1228456729 = 66336663366 / (6 + 6 + 3 + 3 + 6 + 6 + 6 + 3 + 3 + 6 + 6).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614228311 + ... + 614228418.

It is an arithmetic number, because the mean of its divisors is an integer number (9213425475).

Almost surely, 2^66336663366 is an apocalyptic number.

66336663366 is an abundant number, since it is smaller than the sum of its proper divisors (81078144234).

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

66336663366 is a wasteful number, since it uses less digits than its factorization.

66336663366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228456740 (or 1228456734 counting only the distinct ones).

The product of its digits is 22674816, while the sum is 54.

The spelling of 66336663366 in words is "sixty-six billion, three hundred thirty-six million, six hundred sixty-three thousand, three hundred sixty-six".