11581194199 has 2 divisors, whose sum is σ = 11581194200. Its totient is φ = 11581194198.

The previous prime is 11581194197. The next prime is 11581194269. The reversal of 11581194199 is 99149118511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11581194199 - 2¹ = 11581194197 is a prime.

Together with 11581194197, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11581194197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5790597099 + 5790597100.

It is an arithmetic number, because the mean of its divisors is an integer number (5790597100).

Almost surely, 2^11581194199 is an apocalyptic number.

11581194199 is a deficient number, since it is larger than the sum of its proper divisors (1).

11581194199 is an equidigital number, since it uses as much as digits as its factorization.

11581194199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 49.

The spelling of 11581194199 in words is "eleven billion, five hundred eighty-one million, one hundred ninety-four thousand, one hundred ninety-nine".