11471719999 has 4 divisors (see below), whose sum is σ = 11472858936. Its totient is φ = 11470581064.

The previous prime is 11471719997. The next prime is 11471720011. The reversal of 11471719999 is 99991717411.

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 11471719999 - 2¹ = 11471719997 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 (11471719997) 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, 554224 + ... + 574549.

It is an arithmetic number, because the mean of its divisors is an integer number (2868214734).

Almost surely, 2^11471719999 is an apocalyptic number.

11471719999 is a deficient number, since it is larger than the sum of its proper divisors (1138937).

11471719999 is a wasteful number, since it uses less digits than its factorization.

11471719999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138936.

The product of its digits is 1285956, while the sum is 58.

The spelling of 11471719999 in words is "eleven billion, four hundred seventy-one million, seven hundred nineteen thousand, nine hundred ninety-nine".