665641163332 has 12 divisors (see below), whose sum is σ = 1175180638716. Its totient is φ = 329875266560.

The previous prime is 665641163311. The next prime is 665641163353. The reversal of 665641163332 is 233361146566.

665641163332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (665641163311) and next prime (665641163353).

It can be written as a sum of positive squares in 2 ways, for example, as 128727393796 + 536913769536 = 358786^2 + 732744^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736328269 + ... + 736329172.

It is an arithmetic number, because the mean of its divisors is an integer number (97931719893).

Almost surely, 2^665641163332 is an apocalyptic number.

It is an amenable number.

665641163332 is a deficient number, since it is larger than the sum of its proper divisors (509539475384).

665641163332 is a wasteful number, since it uses less digits than its factorization.

665641163332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472657558 (or 1472657556 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 46.

The spelling of 665641163332 in words is "six hundred sixty-five billion, six hundred forty-one million, one hundred sixty-three thousand, three hundred thirty-two".