11181013161 has 8 divisors (see below), whose sum is σ = 15556192320. Its totient is φ = 7129921392.

The previous prime is 11181013139. The next prime is 11181013171. The reversal of 11181013161 is 16131018111.

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

It is not a de Polignac number, because 11181013161 - 2¹³ = 11181004969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11181013111) 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, 81021766 + ... + 81021903.

It is an arithmetic number, because the mean of its divisors is an integer number (1944524040).

Almost surely, 2^11181013161 is an apocalyptic number.

It is an amenable number.

11181013161 is a deficient number, since it is larger than the sum of its proper divisors (4375179159).

11181013161 is a wasteful number, since it uses less digits than its factorization.

11181013161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162043695.

The product of its (nonzero) digits is 144, while the sum is 24.

The spelling of 11181013161 in words is "eleven billion, one hundred eighty-one million, thirteen thousand, one hundred sixty-one".