8168986409642 has 16 divisors (see below), whose sum is σ = 12310961644800. Its totient is φ = 4065361985520.

The previous prime is 8168986409599. The next prime is 8168986409651. The reversal of 8168986409642 is 2469046898618.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6809042 + ... + 7918397.

It is an arithmetic number, because the mean of its divisors is an integer number (769435102800).

Almost surely, 2^{8168986409642} is an apocalyptic number.

8168986409642 is a deficient number, since it is larger than the sum of its proper divisors (4141975235158).

8168986409642 is a wasteful number, since it uses less digits than its factorization.

8168986409642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14728741.

The product of its (nonzero) digits is 286654464, while the sum is 71.

The spelling of 8168986409642 in words is "eight trillion, one hundred sixty-eight billion, nine hundred eighty-six million, four hundred nine thousand, six hundred forty-two".