16170770881 has 4 divisors (see below), whose sum is σ = 16728383700. Its totient is φ = 15613158064.

The previous prime is 16170770849. The next prime is 16170770929. The reversal of 16170770881 is 18807707161.

16170770881 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 4067250625 + 12103520256 = 63775^2 + 110016^2 .

It is a cyclic number.

It is not a de Polignac number, because 16170770881 - 2⁵ = 16170770849 is a prime.

It is a super-2 number, since 2×16170770881² (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 (16170770801) 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, 278806366 + ... + 278806423.

It is an arithmetic number, because the mean of its divisors is an integer number (4182095925).

Almost surely, 2^16170770881 is an apocalyptic number.

It is an amenable number.

16170770881 is a deficient number, since it is larger than the sum of its proper divisors (557612819).

16170770881 is an equidigital number, since it uses as much as digits as its factorization.

16170770881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557612818.

The product of its (nonzero) digits is 131712, while the sum is 46.

The spelling of 16170770881 in words is "sixteen billion, one hundred seventy million, seven hundred seventy thousand, eight hundred eighty-one".