11159387044 has 81 divisors (see below), whose sum is σ = 22558188387. Its totient is φ = 4827234048.

The previous prime is 11159387039. The next prime is 11159387077. The reversal of 11159387044 is 44078395111.

It is a happy number.

The square root of 11159387044 is 105638.

It is a perfect power (a square), and thus also a powerful number.

11159387044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 100761444 + 11058625600 = 10038^2 + 105160^2 .

It is a Duffinian number.

It is an unprimeable number.

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 in 26 ways as a sum of consecutive naturals, for example, 46691877 + ... + 46692115.

Almost surely, 2^11159387044 is an apocalyptic number.

11159387044 is the 105638-th square number.

It is an amenable number.

11159387044 is an abundant number, since it is smaller than the sum of its proper divisors (11398801343).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11159387044 is a wasteful number, since it uses less digits than its factorization.

11159387044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 11159387044 in words is "eleven billion, one hundred fifty-nine million, three hundred eighty-seven thousand, forty-four".