1161365113205 has 16 divisors (see below), whose sum is σ = 1529436311424. Its totient is φ = 839571506880.

The previous prime is 1161365113189. The next prime is 1161365113213. The reversal of 1161365113205 is 5023115631611.

It is not a de Polignac number, because 1161365113205 - 2⁴ = 1161365113189 is a prime.

It is a Duffinian number.

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, 63211562 + ... + 63229931.

It is an arithmetic number, because the mean of its divisors is an integer number (95589769464).

Almost surely, 2^{1161365113205} is an apocalyptic number.

It is an amenable number.

1161365113205 is a deficient number, since it is larger than the sum of its proper divisors (368071198219).

1161365113205 is a wasteful number, since it uses less digits than its factorization.

1161365113205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126441676.

The product of its (nonzero) digits is 16200, while the sum is 35.

The spelling of 1161365113205 in words is "one trillion, one hundred sixty-one billion, three hundred sixty-five million, one hundred thirteen thousand, two hundred five".