11423009999 has 8 divisors (see below), whose sum is σ = 11612329680. Its totient is φ = 11233756800.

The previous prime is 11423009989. The next prime is 11423010031. The reversal of 11423009999 is 99990032411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11423009999 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 (11423009929) 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 7 ways as a sum of consecutive naturals, for example, 426887 + ... + 452855.

It is an arithmetic number, because the mean of its divisors is an integer number (1451541210).

Almost surely, 2^11423009999 is an apocalyptic number.

11423009999 is a deficient number, since it is larger than the sum of its proper divisors (189319681).

11423009999 is an equidigital number, since it uses as much as digits as its factorization.

11423009999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33241.

The product of its (nonzero) digits is 157464, while the sum is 47.

The spelling of 11423009999 in words is "eleven billion, four hundred twenty-three million, nine thousand, nine hundred ninety-nine".