11158817539 has 2 divisors, whose sum is σ = 11158817540. Its totient is φ = 11158817538.

The previous prime is 11158817533. The next prime is 11158817587. The reversal of 11158817539 is 93571885111.

It is a weak prime.

It is an emirp because it is prime and its reverse (93571885111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11158817539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11158817492 and 11158817501.

It is not a weakly prime, because it can be changed into another prime (11158817533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5579408769 + 5579408770.

It is an arithmetic number, because the mean of its divisors is an integer number (5579408770).

Almost surely, 2^11158817539 is an apocalyptic number.

11158817539 is a deficient number, since it is larger than the sum of its proper divisors (1).

11158817539 is an equidigital number, since it uses as much as digits as its factorization.

11158817539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 49.

The spelling of 11158817539 in words is "eleven billion, one hundred fifty-eight million, eight hundred seventeen thousand, five hundred thirty-nine".