16811125291 has 16 divisors (see below), whose sum is σ = 17906313600. Its totient is φ = 15728025600.

The previous prime is 16811125277. The next prime is 16811125313. The reversal of 16811125291 is 19252111861.

It is a happy number.

16811125291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 16811125291 - 2¹¹ = 16811123243 is a prime.

It is a super-2 number, since 2×16811125291² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16811125291.

It is not an unprimeable number, because it can be changed into a prime (16811125271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2110366 + ... + 2118316.

It is an arithmetic number, because the mean of its divisors is an integer number (1119144600).

Almost surely, 2^16811125291 is an apocalyptic number.

16811125291 is a deficient number, since it is larger than the sum of its proper divisors (1095188309).

16811125291 is a wasteful number, since it uses less digits than its factorization.

16811125291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8694.

The product of its digits is 8640, while the sum is 37.

The spelling of 16811125291 in words is "sixteen billion, eight hundred eleven million, one hundred twenty-five thousand, two hundred ninety-one".