11661165341 has 16 divisors (see below), whose sum is σ = 13373521920. Its totient is φ = 9960487920.

The previous prime is 11661165337. The next prime is 11661165353. The reversal of 11661165341 is 14356116611.

It is a cyclic number.

It is not a de Polignac number, because 11661165341 - 2² = 11661165337 is a prime.

It is a super-2 number, since 2×11661165341² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661165361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3338606 + ... + 3342096.

It is an arithmetic number, because the mean of its divisors is an integer number (835845120).

Almost surely, 2^11661165341 is an apocalyptic number.

It is an amenable number.

11661165341 is a deficient number, since it is larger than the sum of its proper divisors (1712356579).

11661165341 is a wasteful number, since it uses less digits than its factorization.

11661165341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024.

The product of its digits is 12960, while the sum is 35.

The spelling of 11661165341 in words is "eleven billion, six hundred sixty-one million, one hundred sixty-five thousand, three hundred forty-one".