11530611399 has 4 divisors (see below), whose sum is σ = 15374148536. Its totient is φ = 7687074264.

The previous prime is 11530611383. The next prime is 11530611461. The reversal of 11530611399 is 99311603511.

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

It is not a de Polignac number, because 11530611399 - 2⁴ = 11530611383 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 (11530611899) 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, 1921768564 + ... + 1921768569.

It is an arithmetic number, because the mean of its divisors is an integer number (3843537134).

Almost surely, 2^11530611399 is an apocalyptic number.

11530611399 is a deficient number, since it is larger than the sum of its proper divisors (3843537137).

11530611399 is an equidigital number, since it uses as much as digits as its factorization.

11530611399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3843537136.

The product of its (nonzero) digits is 21870, while the sum is 39.

The spelling of 11530611399 in words is "eleven billion, five hundred thirty million, six hundred eleven thousand, three hundred ninety-nine".