11550445729 has 3 divisors (see below), whose sum is σ = 11550553203. Its totient is φ = 11550338256.

The previous prime is 11550445681. The next prime is 11550445789. The reversal of 11550445729 is 92754405511.

The square root of 11550445729 is 107473.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92754405511 = 113 ⋅820835447.

It can be written as a sum of positive squares in only one way, i.e., 1639845025 + 9910600704 = 40495^2 + 99552^2 .

It is not a de Polignac number, because 11550445729 - 2¹³ = 11550437537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11550445789) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 53737 + ... + 161209.

It is an arithmetic number, because the mean of its divisors is an integer number (3850184401).

Almost surely, 2^11550445729 is an apocalyptic number.

11550445729 is the 107473-rd square number.

11550445729 is the 53737-th centered octagonal number.

It is an amenable number.

11550445729 is a deficient number, since it is larger than the sum of its proper divisors (107474).

11550445729 is an frugal number, since it uses more digits than its factorization.

11550445729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214946 (or 107473 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 43.

The spelling of 11550445729 in words is "eleven billion, five hundred fifty million, four hundred forty-five thousand, seven hundred twenty-nine".