665213534010 has 48 divisors (see below), whose sum is σ = 1730254014216. Its totient is φ = 177318601344.

The previous prime is 665213533993. The next prime is 665213534039. The reversal of 665213534010 is 10435312566.

665213534010 is a `hidden beast` number, since 66 + 52 + 1 + 3 + 534 + 0 + 10 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 382892401089 + 282321132921 = 618783^2 + 531339^2 .

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 23 ways as a sum of consecutive naturals, for example, 1269049 + ... + 1714908.

Almost surely, 2^665213534010 is an apocalyptic number.

665213534010 is an abundant number, since it is smaller than the sum of its proper divisors (1065040480206).

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

665213534010 is a wasteful number, since it uses less digits than its factorization.

665213534010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986447 (or 2986444 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

Adding to 665213534010 its reverse (10435312566), we get a palindrome (675648846576).

The spelling of 665213534010 in words is "six hundred sixty-five billion, two hundred thirteen million, five hundred thirty-four thousand, ten".