133565423165231 has 8 divisors (see below), whose sum is σ = 137176147981344. Its totient is φ = 129954743007840.

The previous prime is 133565423165179. The next prime is 133565423165249. The reversal of 133565423165231 is 132561324565331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133565423165231 is a prime.

It is a super-2 number, since 2×133565423165231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133565423165231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133565423165261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5057675 + ... + 17108796.

It is an arithmetic number, because the mean of its divisors is an integer number (17147018497668).

Almost surely, 2^{133565423165231} is an apocalyptic number.

133565423165231 is a deficient number, since it is larger than the sum of its proper divisors (3610724816113).

133565423165231 is a wasteful number, since it uses less digits than its factorization.

133565423165231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22329361.

The product of its digits is 5832000, while the sum is 50.

The spelling of 133565423165231 in words is "one hundred thirty-three trillion, five hundred sixty-five billion, four hundred twenty-three million, one hundred sixty-five thousand, two hundred thirty-one".