665127844252 has 12 divisors (see below), whose sum is σ = 1214581280976. Its totient is φ = 318104621120.

The previous prime is 665127844207. The next prime is 665127844261. The reversal of 665127844252 is 252448721566.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 665127844252.

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, 3614825149 + ... + 3614825332.

It is an arithmetic number, because the mean of its divisors is an integer number (101215106748).

Almost surely, 2^665127844252 is an apocalyptic number.

It is an amenable number.

665127844252 is a deficient number, since it is larger than the sum of its proper divisors (549453436724).

665127844252 is a wasteful number, since it uses less digits than its factorization.

665127844252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7229650508 (or 7229650506 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 52.

The spelling of 665127844252 in words is "six hundred sixty-five billion, one hundred twenty-seven million, eight hundred forty-four thousand, two hundred fifty-two".