11533808653 has 4 divisors (see below), whose sum is σ = 11534115328. Its totient is φ = 11533501980.

The previous prime is 11533808651. The next prime is 11533808669. The reversal of 11533808653 is 35680833511.

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 11533808653 - 2¹ = 11533808651 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 (11533808651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87501 + ... + 175282.

It is an arithmetic number, because the mean of its divisors is an integer number (2883528832).

Almost surely, 2^11533808653 is an apocalyptic number.

It is an amenable number.

11533808653 is a deficient number, since it is larger than the sum of its proper divisors (306675).

11533808653 is an equidigital number, since it uses as much as digits as its factorization.

11533808653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306674.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 11533808653 in words is "eleven billion, five hundred thirty-three million, eight hundred eight thousand, six hundred fifty-three".