11170205161 has 8 divisors (see below), whose sum is σ = 11186424648. Its totient is φ = 11154000000.

The previous prime is 11170205129. The next prime is 11170205183. The reversal of 11170205161 is 16150207111.

It can be written as a sum of positive squares in 4 ways, for example, as 51768025 + 11118437136 = 7195^2 + 105444^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11170205161 - 2⁵ = 11170205129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11170200161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3720661 + ... + 3723661.

It is an arithmetic number, because the mean of its divisors is an integer number (1398303081).

Almost surely, 2^11170205161 is an apocalyptic number.

It is an amenable number.

11170205161 is a deficient number, since it is larger than the sum of its proper divisors (16219487).

11170205161 is a wasteful number, since it uses less digits than its factorization.

11170205161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7163.

The product of its (nonzero) digits is 420, while the sum is 25.

The spelling of 11170205161 in words is "eleven billion, one hundred seventy million, two hundred five thousand, one hundred sixty-one".