11315545510205 has 16 divisors (see below), whose sum is σ = 13629909132720. Its totient is φ = 9018270563328.

The previous prime is 11315545510183. The next prime is 11315545510223. The reversal of 11315545510205 is 50201554551311.

It can be written as a sum of positive squares in 8 ways, for example, as 7907585833849 + 3407959676356 = 2812043^2 + 1846066^2 .

It is a cyclic number.

It is not a de Polignac number, because 11315545510205 - 2²⁰ = 11315544461629 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 24319829 + ... + 24780741.

It is an arithmetic number, because the mean of its divisors is an integer number (851869320795).

Almost surely, 2^{11315545510205} is an apocalyptic number.

It is an amenable number.

11315545510205 is a deficient number, since it is larger than the sum of its proper divisors (2314363622515).

11315545510205 is a wasteful number, since it uses less digits than its factorization.

11315545510205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479440.

The product of its (nonzero) digits is 75000, while the sum is 38.

The spelling of 11315545510205 in words is "eleven trillion, three hundred fifteen billion, five hundred forty-five million, five hundred ten thousand, two hundred five".