688771325712 has 40 divisors (see below), whose sum is σ = 1883992157856. Its totient is φ = 216085121536.

The previous prime is 688771325687. The next prime is 688771325743. The reversal of 688771325712 is 217523177886.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422040438 + ... + 422042069.

Almost surely, 2^688771325712 is an apocalyptic number.

It is an amenable number.

688771325712 is an abundant number, since it is smaller than the sum of its proper divisors (1195220832144).

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

688771325712 is a wasteful number, since it uses less digits than its factorization.

688771325712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844082535 (or 844082529 counting only the distinct ones).

The product of its digits is 7902720, while the sum is 57.

The spelling of 688771325712 in words is "six hundred eighty-eight billion, seven hundred seventy-one million, three hundred twenty-five thousand, seven hundred twelve".