11724236399 has 2 divisors, whose sum is σ = 11724236400. Its totient is φ = 11724236398.

The previous prime is 11724236369. The next prime is 11724236413. The reversal of 11724236399 is 99363242711.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (99363242711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11724236399 - 2²⁰ = 11723187823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11724236369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5862118199 + 5862118200.

It is an arithmetic number, because the mean of its divisors is an integer number (5862118200).

Almost surely, 2^11724236399 is an apocalyptic number.

11724236399 is a deficient number, since it is larger than the sum of its proper divisors (1).

11724236399 is an equidigital number, since it uses as much as digits as its factorization.

11724236399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 47.

The spelling of 11724236399 in words is "eleven billion, seven hundred twenty-four million, two hundred thirty-six thousand, three hundred ninety-nine".