11631146161 has 8 divisors (see below), whose sum is σ = 12244256640. Its totient is φ = 11026986432.

The previous prime is 11631146101. The next prime is 11631146171. The reversal of 11631146161 is 16164113611.

It is a happy number.

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 11631146161 - 2⁹ = 11631145649 is a prime.

It is a super-2 number, since 2×11631146161² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11631146101) 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, 2235021 + ... + 2240218.

It is an arithmetic number, because the mean of its divisors is an integer number (1530532080).

Almost surely, 2^11631146161 is an apocalyptic number.

It is an amenable number.

11631146161 is a deficient number, since it is larger than the sum of its proper divisors (613110479).

11631146161 is a wasteful number, since it uses less digits than its factorization.

11631146161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4475375.

The product of its digits is 2592, while the sum is 31.

Adding to 11631146161 its reverse (16164113611), we get a palindrome (27795259772).

The spelling of 11631146161 in words is "eleven billion, six hundred thirty-one million, one hundred forty-six thousand, one hundred sixty-one".