666772105382 has 8 divisors (see below), whose sum is σ = 1000168514400. Its totient is φ = 333382600584.

The previous prime is 666772105309. The next prime is 666772105399. The reversal of 666772105382 is 283501277666.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1477457 + ... + 1875212.

It is an arithmetic number, because the mean of its divisors is an integer number (125021064300).

Almost surely, 2^666772105382 is an apocalyptic number.

666772105382 is a deficient number, since it is larger than the sum of its proper divisors (333396409018).

666772105382 is a wasteful number, since it uses less digits than its factorization.

666772105382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452110.

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 666772105382 in words is "six hundred sixty-six billion, seven hundred seventy-two million, one hundred five thousand, three hundred eighty-two".