11561033225205 has 12 divisors (see below), whose sum is σ = 20039124257100. Its totient is φ = 6165884386752.

The previous prime is 11561033225173. The next prime is 11561033225227. The reversal of 11561033225205 is 50252233016511.

11561033225205 is a `hidden beast` number, since 1 + 1 + 5 + 6 + 103 + 3 + 22 + 520 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5478885852804 + 6082147372401 = 2340702^2 + 2466201^2 .

It is not a de Polignac number, because 11561033225205 - 2⁵ = 11561033225173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11561033225205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128455924680 + ... + 128455924769.

It is an arithmetic number, because the mean of its divisors is an integer number (1669927021425).

Almost surely, 2^{11561033225205} is an apocalyptic number.

11561033225205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11561033225205 is a deficient number, since it is larger than the sum of its proper divisors (8478091031895).

11561033225205 is a wasteful number, since it uses less digits than its factorization.

11561033225205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256911849460 (or 256911849457 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 11561033225205 in words is "eleven trillion, five hundred sixty-one billion, thirty-three million, two hundred twenty-five thousand, two hundred five".