11455820199 has 14 divisors (see below), whose sum is σ = 17175874176. Its totient is φ = 7637212980.

The previous prime is 11455820161. The next prime is 11455820213. The reversal of 11455820199 is 99102855411.

11455820199 is a `hidden beast` number, since 1 + 1 + 4 + 558 + 2 + 0 + 1 + 99 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-11455820199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11455820899) 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 13 ways as a sum of consecutive naturals, for example, 7856487 + ... + 7857944.

Almost surely, 2^11455820199 is an apocalyptic number.

11455820199 is a deficient number, since it is larger than the sum of its proper divisors (5720053977).

11455820199 is an frugal number, since it uses more digits than its factorization.

11455820199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15714449 (or 15714434 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

The spelling of 11455820199 in words is "eleven billion, four hundred fifty-five million, eight hundred twenty thousand, one hundred ninety-nine".