16981366068 has 24 divisors (see below), whose sum is σ = 44025764160. Its totient is φ = 5660455320.

The previous prime is 16981365997. The next prime is 16981366091. The reversal of 16981366068 is 86066318961.

16981366068 is a `hidden beast` number, since 16 + 9 + 8 + 13 + 6 + 606 + 8 = 666.

16981366068 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 78617328 + ... + 78617543.

It is an arithmetic number, because the mean of its divisors is an integer number (1834406840).

Almost surely, 2^16981366068 is an apocalyptic number.

16981366068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

16981366068 is an abundant number, since it is smaller than the sum of its proper divisors (27044398092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16981366068 is a wasteful number, since it uses less digits than its factorization.

16981366068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157234884 (or 157234876 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 16981366068 in words is "sixteen billion, nine hundred eighty-one million, three hundred sixty-six thousand, sixty-eight".