11590136549 has 4 divisors (see below), whose sum is σ = 11989796460. Its totient is φ = 11190476640.

The previous prime is 11590136539. The next prime is 11590136561. The reversal of 11590136549 is 94563109511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9382828225 + 2207308324 = 96865^2 + 46982^2 .

It is a cyclic number.

It is not a de Polignac number, because 11590136549 - 2⁴ = 11590136533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11590136539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199829912 + ... + 199829969.

It is an arithmetic number, because the mean of its divisors is an integer number (2997449115).

Almost surely, 2^11590136549 is an apocalyptic number.

It is an amenable number.

11590136549 is a deficient number, since it is larger than the sum of its proper divisors (399659911).

11590136549 is an equidigital number, since it uses as much as digits as its factorization.

11590136549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399659910.

The product of its (nonzero) digits is 145800, while the sum is 44.

The spelling of 11590136549 in words is "eleven billion, five hundred ninety million, one hundred thirty-six thousand, five hundred forty-nine".