168088081688 has 8 divisors (see below), whose sum is σ = 315165153180. Its totient is φ = 84044040840.

The previous prime is 168088081687. The next prime is 168088081709. The reversal of 168088081688 is 886180880861.

168088081688 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 168088081688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168088081687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505505098 + ... + 10505505113.

Almost surely, 2^168088081688 is an apocalyptic number.

It is an amenable number.

168088081688 is a deficient number, since it is larger than the sum of its proper divisors (147077071492).

168088081688 is a wasteful number, since it uses less digits than its factorization.

168088081688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21011010217 (or 21011010213 counting only the distinct ones).

The product of its (nonzero) digits is 9437184, while the sum is 62.

The spelling of 168088081688 in words is "one hundred sixty-eight billion, eighty-eight million, eighty-one thousand, six hundred eighty-eight".