133030317661 has 4 divisors (see below), whose sum is σ = 133056371392. Its totient is φ = 133004263932.

The previous prime is 133030317653. The next prime is 133030317671. The reversal of 133030317661 is 166713030331.

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 not a de Polignac number, because 133030317661 - 2³ = 133030317653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133030317671) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13019205 + ... + 13029418.

It is an arithmetic number, because the mean of its divisors is an integer number (33264092848).

Almost surely, 2^133030317661 is an apocalyptic number.

It is an amenable number.

133030317661 is a deficient number, since it is larger than the sum of its proper divisors (26053731).

133030317661 is an equidigital number, since it uses as much as digits as its factorization.

133030317661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26053730.

The product of its (nonzero) digits is 20412, while the sum is 34.

Adding to 133030317661 its reverse (166713030331), we get a palindrome (299743347992).

The spelling of 133030317661 in words is "one hundred thirty-three billion, thirty million, three hundred seventeen thousand, six hundred sixty-one".