6665145232 has 10 divisors (see below), whose sum is σ = 12913718918. Its totient is φ = 3332572608.

The previous prime is 6665145209. The next prime is 6665145259. The reversal of 6665145232 is 2325415666.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6106484736 + 558660496 = 78144^2 + 23636^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208285773 + ... + 208285804.

Almost surely, 2^6665145232 is an apocalyptic number.

It is an amenable number.

6665145232 is a deficient number, since it is larger than the sum of its proper divisors (6248573686).

6665145232 is a wasteful number, since it uses less digits than its factorization.

6665145232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416571585 (or 416571579 counting only the distinct ones).

The product of its digits is 259200, while the sum is 40.

The square root of 6665145232 is about 81640.3407146247. The cubic root of 6665145232 is about 1881.9288743856.

The spelling of 6665145232 in words is "six billion, six hundred sixty-five million, one hundred forty-five thousand, two hundred thirty-two".