11141663665 has 24 divisors (see below), whose sum is σ = 15093164520. Its totient is φ = 7884011520.

The previous prime is 11141663647. The next prime is 11141663681. The reversal of 11141663665 is 56636614111.

It can be written as a sum of positive squares in 4 ways, for example, as 703363441 + 10438300224 = 26521^2 + 102168^2 .

It is not a de Polignac number, because 11141663665 - 2⁵ = 11141663633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226480 + ... + 271249.

It is an arithmetic number, because the mean of its divisors is an integer number (628881855).

Almost surely, 2^11141663665 is an apocalyptic number.

It is an amenable number.

11141663665 is a deficient number, since it is larger than the sum of its proper divisors (3951500855).

11141663665 is a wasteful number, since it uses less digits than its factorization.

11141663665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497793 (or 497782 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The spelling of 11141663665 in words is "eleven billion, one hundred forty-one million, six hundred sixty-three thousand, six hundred sixty-five".