16671870868356 has 672 divisors, whose sum is σ = 49883090181120. Its totient is φ = 4827720268800.

The previous prime is 16671870868297. The next prime is 16671870868357. The reversal of 16671870868356 is 65386807817661.

16671870868356 is a `hidden beast` number, since 1 + 66 + 71 + 8 + 70 + 86 + 8 + 356 = 666.

It is a super-2 number, since 2×16671870868356² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16671870868357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 41994636750 + ... + 41994637146.

It is an arithmetic number, because the mean of its divisors is an integer number (74230788960).

Almost surely, 2^{16671870868356} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16671870868356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24941545090560).

16671870868356 is an abundant number, since it is smaller than the sum of its proper divisors (33211219312764).

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

16671870868356 is a wasteful number, since it uses less digits than its factorization.

16671870868356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 487710720, while the sum is 72.

The spelling of 16671870868356 in words is "sixteen trillion, six hundred seventy-one billion, eight hundred seventy million, eight hundred sixty-eight thousand, three hundred fifty-six".