11808688533 has 8 divisors (see below), whose sum is σ = 15832879200. Its totient is φ = 7828478448.

The previous prime is 11808688523. The next prime is 11808688607. The reversal of 11808688533 is 33588680811.

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

It is not a de Polignac number, because 11808688533 - 2¹³ = 11808680341 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11808688523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10994518 + ... + 10995591.

It is an arithmetic number, because the mean of its divisors is an integer number (1979109900).

Almost surely, 2^11808688533 is an apocalyptic number.

It is an amenable number.

11808688533 is a deficient number, since it is larger than the sum of its proper divisors (4024190667).

11808688533 is a wasteful number, since it uses less digits than its factorization.

11808688533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21990291.

The product of its (nonzero) digits is 1105920, while the sum is 51.

The spelling of 11808688533 in words is "eleven billion, eight hundred eight million, six hundred eighty-eight thousand, five hundred thirty-three".