11533225432521 has 32 divisors (see below), whose sum is σ = 16964945141760. Its totient is φ = 6924058444800.

The previous prime is 11533225432411. The next prime is 11533225432577. The reversal of 11533225432521 is 12523452233511.

It is not a de Polignac number, because 11533225432521 - 2¹⁵ = 11533225399753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11533225432521.

It is not an unprimeable number, because it can be changed into a prime (11533225832521) 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 31 ways as a sum of consecutive naturals, for example, 67454781 + ... + 67625541.

It is an arithmetic number, because the mean of its divisors is an integer number (530154535680).

Almost surely, 2^{11533225432521} is an apocalyptic number.

It is an amenable number.

11533225432521 is a deficient number, since it is larger than the sum of its proper divisors (5431719709239).

11533225432521 is a wasteful number, since it uses less digits than its factorization.

11533225432521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213057.

The product of its digits is 216000, while the sum is 39.

The spelling of 11533225432521 in words is "eleven trillion, five hundred thirty-three billion, two hundred twenty-five million, four hundred thirty-two thousand, five hundred twenty-one".