11545412539 has 2 divisors, whose sum is σ = 11545412540. Its totient is φ = 11545412538.

The previous prime is 11545412531. The next prime is 11545412563. The reversal of 11545412539 is 93521454511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11545412539 - 2³ = 11545412531 is a prime.

It is not a weakly prime, because it can be changed into another prime (11545412531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5772706269 + 5772706270.

It is an arithmetic number, because the mean of its divisors is an integer number (5772706270).

Almost surely, 2^11545412539 is an apocalyptic number.

11545412539 is a deficient number, since it is larger than the sum of its proper divisors (1).

11545412539 is an equidigital number, since it uses as much as digits as its factorization.

11545412539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108000, while the sum is 40.

The spelling of 11545412539 in words is "eleven billion, five hundred forty-five million, four hundred twelve thousand, five hundred thirty-nine".