11838409559 has 2 divisors, whose sum is σ = 11838409560. Its totient is φ = 11838409558.

The previous prime is 11838409547. The next prime is 11838409567. The reversal of 11838409559 is 95590483811.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11838409559 - 2⁴ = 11838409543 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11838409559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11838409519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5919204779 + 5919204780.

It is an arithmetic number, because the mean of its divisors is an integer number (5919204780).

Almost surely, 2^11838409559 is an apocalyptic number.

11838409559 is a deficient number, since it is larger than the sum of its proper divisors (1).

11838409559 is an equidigital number, since it uses as much as digits as its factorization.

11838409559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 53.

The spelling of 11838409559 in words is "eleven billion, eight hundred thirty-eight million, four hundred nine thousand, five hundred fifty-nine".