16313330881 has 4 divisors (see below), whose sum is σ = 16317355972. Its totient is φ = 16309305792.

The previous prime is 16313330867. The next prime is 16313330899. The reversal of 16313330881 is 18803331361.

It is a happy number.

16313330881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5195526400 + 11117804481 = 72080^2 + 105441^2 .

It is a cyclic number.

It is not a de Polignac number, because 16313330881 - 2¹¹ = 16313328833 is a prime.

It is a super-2 number, since 2×16313330881² (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 16313330881.

It is not an unprimeable number, because it can be changed into a prime (16313330801) 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 3 ways as a sum of consecutive naturals, for example, 2006460 + ... + 2014573.

It is an arithmetic number, because the mean of its divisors is an integer number (4079338993).

Almost surely, 2^16313330881 is an apocalyptic number.

It is an amenable number.

16313330881 is a deficient number, since it is larger than the sum of its proper divisors (4025091).

16313330881 is an equidigital number, since it uses as much as digits as its factorization.

16313330881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4025090.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 16313330881 in words is "sixteen billion, three hundred thirteen million, three hundred thirty thousand, eight hundred eighty-one".