168881066488 has 8 divisors (see below), whose sum is σ = 316651999680. Its totient is φ = 84440533240.

The previous prime is 168881066483. The next prime is 168881066533. The reversal of 168881066488 is 884660188861.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168881066483) by changing a digit.

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 as a sum of consecutive naturals, namely, 10555066648 + ... + 10555066663.

It is an arithmetic number, because the mean of its divisors is an integer number (39581499960).

Almost surely, 2^168881066488 is an apocalyptic number.

It is an amenable number.

168881066488 is a deficient number, since it is larger than the sum of its proper divisors (147770933192).

168881066488 is a wasteful number, since it uses less digits than its factorization.

168881066488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21110133317 (or 21110133313 counting only the distinct ones).

The product of its (nonzero) digits is 28311552, while the sum is 64.

The spelling of 168881066488 in words is "one hundred sixty-eight billion, eight hundred eighty-one million, sixty-six thousand, four hundred eighty-eight".