665665163704324 has 24 divisors (see below), whose sum is σ = 1353155414746688. Its totient is φ = 280608265729440.

The previous prime is 665665163704313. The next prime is 665665163704433. The reversal of 665665163704324 is 423407361566566.

It is a super-2 number, since 2×665665163704324² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194866849494 + ... + 194866852909.

Almost surely, 2^{665665163704324} is an apocalyptic number.

It is an amenable number.

665665163704324 is an abundant number, since it is smaller than the sum of its proper divisors (687490251042364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665665163704324 is a wasteful number, since it uses less digits than its factorization.

665665163704324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389733702475 (or 389733702473 counting only the distinct ones).

The product of its (nonzero) digits is 391910400, while the sum is 64.

The spelling of 665665163704324 in words is "six hundred sixty-five trillion, six hundred sixty-five billion, one hundred sixty-three million, seven hundred four thousand, three hundred twenty-four".