133040312065 has 4 divisors (see below), whose sum is σ = 159648374484. Its totient is φ = 106432249648.

The previous prime is 133040312047. The next prime is 133040312077. The reversal of 133040312065 is 560213040331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 77204512449 + 55835799616 = 277857^2 + 236296^2 .

It is a cyclic number.

It is not a de Polignac number, because 133040312065 - 2¹¹ = 133040310017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13304031202 + ... + 13304031211.

It is an arithmetic number, because the mean of its divisors is an integer number (39912093621).

Almost surely, 2^133040312065 is an apocalyptic number.

It is an amenable number.

133040312065 is a deficient number, since it is larger than the sum of its proper divisors (26608062419).

133040312065 is an equidigital number, since it uses as much as digits as its factorization.

133040312065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26608062418.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 133040312065 its reverse (560213040331), we get a palindrome (693253352396).

The spelling of 133040312065 in words is "one hundred thirty-three billion, forty million, three hundred twelve thousand, sixty-five".