669334686433966 has 32 divisors (see below), whose sum is σ = 1177563964082688. Its totient is φ = 279415766838240.

The previous prime is 669334686433961. The next prime is 669334686433969.

669334686433966 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 669334686433966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669334686433961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3804592960 + ... + 3804768883.

It is an arithmetic number, because the mean of its divisors is an integer number (36798873877584).

Almost surely, 2^{669334686433966} is an apocalyptic number.

669334686433966 is a deficient number, since it is larger than the sum of its proper divisors (508229277648722).

669334686433966 is a wasteful number, since it uses less digits than its factorization.

669334686433966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7609362016.

The product of its digits is 39182082048, while the sum is 82.

The spelling of 669334686433966 in words is "six hundred sixty-nine trillion, three hundred thirty-four billion, six hundred eighty-six million, four hundred thirty-three thousand, nine hundred sixty-six".