665132653033 has 4 divisors (see below), whose sum is σ = 671348846160. Its totient is φ = 658916459908.

The previous prime is 665132653027. The next prime is 665132653037. The reversal of 665132653033 is 330356231566.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-665132653033 is a prime.

It is a super-2 number, since 2×665132653033² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665132653037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3108096403 + ... + 3108096616.

It is an arithmetic number, because the mean of its divisors is an integer number (167837211540).

Almost surely, 2^665132653033 is an apocalyptic number.

It is an amenable number.

665132653033 is a deficient number, since it is larger than the sum of its proper divisors (6216193127).

665132653033 is a wasteful number, since it uses less digits than its factorization.

665132653033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6216193126.

The product of its (nonzero) digits is 874800, while the sum is 43.

Adding to 665132653033 its reverse (330356231566), we get a palindrome (995488884599).

The spelling of 665132653033 in words is "six hundred sixty-five billion, one hundred thirty-two million, six hundred fifty-three thousand, thirty-three".