6688950598866 has 16 divisors (see below), whose sum is σ = 13739466095424. Its totient is φ = 2169389383344.

The previous prime is 6688950598849. The next prime is 6688950598927.

6688950598866 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6688950598866² (a number of 26 digits) contains 22 as substring.

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, 15065203830 + ... + 15065204273.

It is an arithmetic number, because the mean of its divisors is an integer number (858716630964).

Almost surely, 2^{6688950598866} is an apocalyptic number.

6688950598866 is an abundant number, since it is smaller than the sum of its proper divisors (7050515496558).

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

6688950598866 is a wasteful number, since it uses less digits than its factorization.

6688950598866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30130408145.

The product of its (nonzero) digits is 10749542400, while the sum is 84.

The spelling of 6688950598866 in words is "six trillion, six hundred eighty-eight billion, nine hundred fifty million, five hundred ninety-eight thousand, eight hundred sixty-six".