669440044966 has 24 divisors (see below), whose sum is σ = 1274295894696. Its totient is φ = 260820796320.

The previous prime is 669440044961. The next prime is 669440044969.

669440044966 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 669440044966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669440044961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310499871 + ... + 310502026.

It is an arithmetic number, because the mean of its divisors is an integer number (53095662279).

Almost surely, 2^669440044966 is an apocalyptic number.

669440044966 is a deficient number, since it is larger than the sum of its proper divisors (604855849730).

669440044966 is a wasteful number, since it uses less digits than its factorization.

669440044966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621001924 (or 621001917 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 58.

The spelling of 669440044966 in words is "six hundred sixty-nine billion, four hundred forty million, forty-four thousand, nine hundred sixty-six".