11664233431533 has 6 divisors (see below), whose sum is σ = 16848337178894. Its totient is φ = 7776155621016.

The previous prime is 11664233431483. The next prime is 11664233431553. The reversal of 11664233431533 is 33513433246611.

11664233431533 is a `hidden beast` number, since 1 + 1 + 6 + 6 + 42 + 33 + 43 + 1 + 533 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7932548324484 + 3731685107049 = 2816478^2 + 1931757^2 .

It is not a de Polignac number, because 11664233431533 - 2⁶ = 11664233431469 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 (11664233431553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 648012968410 + ... + 648012968427.

Almost surely, 2^{11664233431533} is an apocalyptic number.

It is an amenable number.

11664233431533 is a deficient number, since it is larger than the sum of its proper divisors (5184103747361).

11664233431533 is a wasteful number, since it uses less digits than its factorization.

11664233431533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296025936843 (or 1296025936840 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 45.

The spelling of 11664233431533 in words is "eleven trillion, six hundred sixty-four billion, two hundred thirty-three million, four hundred thirty-one thousand, five hundred thirty-three".