11726432563 has 4 divisors (see below), whose sum is σ = 11730195360. Its totient is φ = 11722669768.

The previous prime is 11726432537. The next prime is 11726432569. The reversal of 11726432563 is 36523462711.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11726432563 - 2²⁹ = 11189561651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11726432569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1876720 + ... + 1882957.

It is an arithmetic number, because the mean of its divisors is an integer number (2932548840).

Almost surely, 2^11726432563 is an apocalyptic number.

11726432563 is a deficient number, since it is larger than the sum of its proper divisors (3762797).

11726432563 is an equidigital number, since it uses as much as digits as its factorization.

11726432563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762796.

The product of its digits is 181440, while the sum is 40.

The spelling of 11726432563 in words is "eleven billion, seven hundred twenty-six million, four hundred thirty-two thousand, five hundred sixty-three".