11161061111665 has 32 divisors (see below), whose sum is σ = 14311191283200. Its totient is φ = 8331426616320.

The previous prime is 11161061111633. The next prime is 11161061111693. The reversal of 11161061111665 is 56611116016111.

It is not a de Polignac number, because 11161061111665 - 2⁵ = 11161061111633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3867085 + ... + 6105445.

It is an arithmetic number, because the mean of its divisors is an integer number (447224727600).

Almost surely, 2^{11161061111665} is an apocalyptic number.

It is an amenable number.

11161061111665 is a deficient number, since it is larger than the sum of its proper divisors (3150130171535).

11161061111665 is a wasteful number, since it uses less digits than its factorization.

11161061111665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239177.

The product of its (nonzero) digits is 6480, while the sum is 37.

Adding to 11161061111665 its reverse (56611116016111), we get a palindrome (67772177127776).

The spelling of 11161061111665 in words is "eleven trillion, one hundred sixty-one billion, sixty-one million, one hundred eleven thousand, six hundred sixty-five".