11426091899 has 4 divisors (see below), whose sum is σ = 11452480536. Its totient is φ = 11399703264.

The previous prime is 11426091877. The next prime is 11426091917. The reversal of 11426091899 is 99819062411.

11426091899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99819062411 = 89 ⋅1121562499.

It is a cyclic number.

It is not a de Polignac number, because 11426091899 - 2¹⁶ = 11426026363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11426031899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13193669 + ... + 13194534.

It is an arithmetic number, because the mean of its divisors is an integer number (2863120134).

Almost surely, 2^11426091899 is an apocalyptic number.

11426091899 is a deficient number, since it is larger than the sum of its proper divisors (26388637).

11426091899 is an equidigital number, since it uses as much as digits as its factorization.

11426091899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26388636.

The product of its (nonzero) digits is 279936, while the sum is 50.

The spelling of 11426091899 in words is "eleven billion, four hundred twenty-six million, ninety-one thousand, eight hundred ninety-nine".