11534020109 has 2 divisors, whose sum is σ = 11534020110. Its totient is φ = 11534020108.

The previous prime is 11534020093. The next prime is 11534020111. The reversal of 11534020109 is 90102043511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11533686025 + 334084 = 107395^2 + 578^2 .

It is a cyclic number.

It is not a de Polignac number, because 11534020109 - 2⁴ = 11534020093 is a prime.

Together with 11534020111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11534020139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5767010054 + 5767010055.

It is an arithmetic number, because the mean of its divisors is an integer number (5767010055).

Almost surely, 2^11534020109 is an apocalyptic number.

It is an amenable number.

11534020109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11534020109 is an equidigital number, since it uses as much as digits as its factorization.

11534020109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 11534020109 in words is "eleven billion, five hundred thirty-four million, twenty thousand, one hundred nine".