11712999885 has 16 divisors (see below), whose sum is σ = 18855777984. Its totient is φ = 6208607232.

The previous prime is 11712999833. The next prime is 11712999889. The reversal of 11712999885 is 58899921711.

11712999885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11712999885 - 2¹¹ = 11712997837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11712999889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2392852 + ... + 2397741.

It is an arithmetic number, because the mean of its divisors is an integer number (1178486124).

Almost surely, 2^11712999885 is an apocalyptic number.

11712999885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11712999885 is a deficient number, since it is larger than the sum of its proper divisors (7142778099).

11712999885 is a wasteful number, since it uses less digits than its factorization.

11712999885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4790764.

The product of its digits is 3265920, while the sum is 60.

The spelling of 11712999885 in words is "eleven billion, seven hundred twelve million, nine hundred ninety-nine thousand, eight hundred eighty-five".