11966589903 has 4 divisors (see below), whose sum is σ = 15955453208. Its totient is φ = 7977726600.

The previous prime is 11966589893. The next prime is 11966589911. The reversal of 11966589903 is 30998566911.

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

It is not a de Polignac number, because 11966589903 - 2⁵ = 11966589871 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 (11966579903) 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, 1994431648 + ... + 1994431653.

It is an arithmetic number, because the mean of its divisors is an integer number (3988863302).

Almost surely, 2^11966589903 is an apocalyptic number.

11966589903 is a deficient number, since it is larger than the sum of its proper divisors (3988863305).

11966589903 is an equidigital number, since it uses as much as digits as its factorization.

11966589903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988863304.

The product of its (nonzero) digits is 3149280, while the sum is 57.

The spelling of 11966589903 in words is "eleven billion, nine hundred sixty-six million, five hundred eighty-nine thousand, nine hundred three".