68999488168 has 16 divisors (see below), whose sum is σ = 139325889780. Its totient is φ = 31845917568.

The previous prime is 68999488141. The next prime is 68999488189. The reversal of 68999488168 is 86188499986.

It can be written as a sum of positive squares in 2 ways, for example, as 53797091364 + 15202396804 = 231942^2 + 123298^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68999488094 and 68999488103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331728205 + ... + 331728412.

Almost surely, 2^68999488168 is an apocalyptic number.

It is an amenable number.

68999488168 is an abundant number, since it is smaller than the sum of its proper divisors (70326401612).

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

68999488168 is a wasteful number, since it uses less digits than its factorization.

68999488168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663456636 (or 663456632 counting only the distinct ones).

The product of its digits is 429981696, while the sum is 76.

The spelling of 68999488168 in words is "sixty-eight billion, nine hundred ninety-nine million, four hundred eighty-eight thousand, one hundred sixty-eight".