16602112881 has 6 divisors (see below), whose sum is σ = 23980829730. Its totient is φ = 11068075248.

The previous prime is 16602112829. The next prime is 16602112883. The reversal of 16602112881 is 18821120661.

16602112881 is a `hidden beast` number, since 16 + 602 + 11 + 28 + 8 + 1 = 666.

16602112881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 14202680625 + 2399432256 = 119175^2 + 48984^2 .

It is not a de Polignac number, because 16602112881 - 2⁹ = 16602112369 is a prime.

It is a super-2 number, since 2×16602112881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16602112883) 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 5 ways as a sum of consecutive naturals, for example, 922339596 + ... + 922339613.

It is an arithmetic number, because the mean of its divisors is an integer number (3996804955).

Almost surely, 2^16602112881 is an apocalyptic number.

It is an amenable number.

16602112881 is a deficient number, since it is larger than the sum of its proper divisors (7378716849).

16602112881 is a wasteful number, since it uses less digits than its factorization.

16602112881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844679215 (or 1844679212 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The spelling of 16602112881 in words is "sixteen billion, six hundred two million, one hundred twelve thousand, eight hundred eighty-one".