16871638506668 has 48 divisors (see below), whose sum is σ = 32233443637248. Its totient is φ = 7663225920000.

The previous prime is 16871638506649. The next prime is 16871638506673. The reversal of 16871638506668 is 86660583617861.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347651021 + ... + 347699547.

It is an arithmetic number, because the mean of its divisors is an integer number (671530075776).

Almost surely, 2^{16871638506668} is an apocalyptic number.

It is an amenable number.

16871638506668 is a deficient number, since it is larger than the sum of its proper divisors (15361805130580).

16871638506668 is a wasteful number, since it uses less digits than its factorization.

16871638506668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54254 (or 54252 counting only the distinct ones).

The product of its (nonzero) digits is 418037760, while the sum is 71.

The spelling of 16871638506668 in words is "sixteen trillion, eight hundred seventy-one billion, six hundred thirty-eight million, five hundred six thousand, six hundred sixty-eight".