19660988094168 has 128 divisors (see below), whose sum is σ = 49644074188800. Its totient is φ = 6488397331584.

The previous prime is 19660988094151. The next prime is 19660988094203. The reversal of 19660988094168 is 86149088906691.

It is a super-2 number, since 2×19660988094168² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19660988094168.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3251359321 + ... + 3251365367.

It is an arithmetic number, because the mean of its divisors is an integer number (387844329600).

Almost surely, 2^{19660988094168} is an apocalyptic number.

It is an amenable number.

19660988094168 is an abundant number, since it is smaller than the sum of its proper divisors (29983086094632).

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

19660988094168 is a wasteful number, since it uses less digits than its factorization.

19660988094168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8749 (or 8745 counting only the distinct ones).

The product of its (nonzero) digits is 322486272, while the sum is 75.

The spelling of 19660988094168 in words is "nineteen trillion, six hundred sixty billion, nine hundred eighty-eight million, ninety-four thousand, one hundred sixty-eight".