16635112131 has 32 divisors (see below), whose sum is σ = 24335232768. Its totient is φ = 10024266240.

The previous prime is 16635112111. The next prime is 16635112141. The reversal of 16635112131 is 13121153661.

It is not a de Polignac number, because 16635112131 - 2¹¹ = 16635110083 is a prime.

It is a super-2 number, since 2×16635112131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16635112111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4628071 + ... + 4631663.

It is an arithmetic number, because the mean of its divisors is an integer number (760476024).

Almost surely, 2^16635112131 is an apocalyptic number.

16635112131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16635112131 is a deficient number, since it is larger than the sum of its proper divisors (7700120637).

16635112131 is a wasteful number, since it uses less digits than its factorization.

16635112131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371.

The product of its digits is 3240, while the sum is 30.

Adding to 16635112131 its reverse (13121153661), we get a palindrome (29756265792).

The spelling of 16635112131 in words is "sixteen billion, six hundred thirty-five million, one hundred twelve thousand, one hundred thirty-one".