665051150566 has 16 divisors (see below), whose sum is σ = 1089492456960. Its totient is φ = 301955161480.

The previous prime is 665051150539. The next prime is 665051150579.

665051150566 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17020846 + ... + 17059873.

It is an arithmetic number, because the mean of its divisors is an integer number (68093278560).

Almost surely, 2^665051150566 is an apocalyptic number.

665051150566 is a deficient number, since it is larger than the sum of its proper divisors (424441306394).

665051150566 is a wasteful number, since it uses less digits than its factorization.

665051150566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34081619.

The product of its (nonzero) digits is 810000, while the sum is 46.

The spelling of 665051150566 in words is "six hundred sixty-five billion, fifty-one million, one hundred fifty thousand, five hundred sixty-six".