168897769616 has 20 divisors (see below), whose sum is σ = 327277540992. Its totient is φ = 84439049376.

The previous prime is 168897769591. The next prime is 168897769631. The reversal of 168897769616 is 616967798861.

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 3 ways as a sum of consecutive naturals, for example, 472040 + ... + 748743.

Almost surely, 2^168897769616 is an apocalyptic number.

168897769616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

168897769616 is a deficient number, since it is larger than the sum of its proper divisors (158379771376).

168897769616 is a wasteful number, since it uses less digits than its factorization.

168897769616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229438 (or 1229432 counting only the distinct ones).

The product of its digits is 329204736, while the sum is 74.

The spelling of 168897769616 in words is "one hundred sixty-eight billion, eight hundred ninety-seven million, seven hundred sixty-nine thousand, six hundred sixteen".