11399638567 has 4 divisors (see below), whose sum is σ = 11592852840. Its totient is φ = 11206424296.

The previous prime is 11399638499. The next prime is 11399638619. The reversal of 11399638567 is 76583699311.

It is a happy number.

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 11399638567 - 2¹¹ = 11399636519 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 (11399638267) 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, 96607048 + ... + 96607165.

It is an arithmetic number, because the mean of its divisors is an integer number (2898213210).

Almost surely, 2^11399638567 is an apocalyptic number.

11399638567 is a deficient number, since it is larger than the sum of its proper divisors (193214273).

11399638567 is an equidigital number, since it uses as much as digits as its factorization.

11399638567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193214272.

The product of its digits is 7348320, while the sum is 58.

The spelling of 11399638567 in words is "eleven billion, three hundred ninety-nine million, six hundred thirty-eight thousand, five hundred sixty-seven".