11128024561 has 4 divisors (see below), whose sum is σ = 11238203124. Its totient is φ = 11017846000.

The previous prime is 11128024547. The next prime is 11128024601. The reversal of 11128024561 is 16542082111.

11128024561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 9359401536 + 1768623025 = 96744^2 + 42055^2 .

It is a cyclic number.

It is not a de Polignac number, because 11128024561 - 2⁵ = 11128024529 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11128024541) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 55089130 + ... + 55089331.

It is an arithmetic number, because the mean of its divisors is an integer number (2809550781).

Almost surely, 2^11128024561 is an apocalyptic number.

It is an amenable number.

11128024561 is a deficient number, since it is larger than the sum of its proper divisors (110178563).

11128024561 is a wasteful number, since it uses less digits than its factorization.

11128024561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110178562.

The product of its (nonzero) digits is 3840, while the sum is 31.

The spelling of 11128024561 in words is "eleven billion, one hundred twenty-eight million, twenty-four thousand, five hundred sixty-one".