665324211434 has 4 divisors (see below), whose sum is σ = 997986317154. Its totient is φ = 332662105716.

The previous prime is 665324211427. The next prime is 665324211439. The reversal of 665324211434 is 434112423566.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 652788050209 + 12536161225 = 807953^2 + 111965^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 665324211391 and 665324211400.

It is not an unprimeable number, because it can be changed into a prime (665324211439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166331052857 + ... + 166331052860.

Almost surely, 2^665324211434 is an apocalyptic number.

665324211434 is a deficient number, since it is larger than the sum of its proper divisors (332662105720).

665324211434 is a wasteful number, since it uses less digits than its factorization.

665324211434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332662105719.

The product of its digits is 414720, while the sum is 41.

The spelling of 665324211434 in words is "six hundred sixty-five billion, three hundred twenty-four million, two hundred eleven thousand, four hundred thirty-four".