11199775813 has 2 divisors, whose sum is σ = 11199775814. Its totient is φ = 11199775812.

The previous prime is 11199775799. The next prime is 11199775819. The reversal of 11199775813 is 31857799111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11087458209 + 112317604 = 105297^2 + 10598^2 .

It is a cyclic number.

It is not a de Polignac number, because 11199775813 - 2⁵ = 11199775781 is a prime.

It is a super-2 number, since 2×11199775813² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11199775819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5599887906 + 5599887907.

It is an arithmetic number, because the mean of its divisors is an integer number (5599887907).

Almost surely, 2^11199775813 is an apocalyptic number.

It is an amenable number.

11199775813 is a deficient number, since it is larger than the sum of its proper divisors (1).

11199775813 is an equidigital number, since it uses as much as digits as its factorization.

11199775813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 52.

The spelling of 11199775813 in words is "eleven billion, one hundred ninety-nine million, seven hundred seventy-five thousand, eight hundred thirteen".