11537875409 has 2 divisors, whose sum is σ = 11537875410. Its totient is φ = 11537875408.

The previous prime is 11537875387. The next prime is 11537875423. The reversal of 11537875409 is 90457873511.

It is a happy number.

11537875409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8787187600 + 2750687809 = 93740^2 + 52447^2 .

It is a cyclic number.

It is not a de Polignac number, because 11537875409 - 2¹⁶ = 11537809873 is a prime.

It is not a weakly prime, because it can be changed into another prime (11537875429) 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 as a sum of consecutive naturals, namely, 5768937704 + 5768937705.

It is an arithmetic number, because the mean of its divisors is an integer number (5768937705).

Almost surely, 2^11537875409 is an apocalyptic number.

It is an amenable number.

11537875409 is a deficient number, since it is larger than the sum of its proper divisors (1).

11537875409 is an equidigital number, since it uses as much as digits as its factorization.

11537875409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1058400, while the sum is 50.

The spelling of 11537875409 in words is "eleven billion, five hundred thirty-seven million, eight hundred seventy-five thousand, four hundred nine".