1688164525108 has 12 divisors (see below), whose sum is σ = 2954301935620. Its totient is φ = 844078257792.

The previous prime is 1688164525087. The next prime is 1688164525109. The reversal of 1688164525108 is 8015254618861.

It can be written as a sum of positive squares in 2 ways, for example, as 432303620004 + 1255860905104 = 657498^2 + 1120652^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1688164525109) 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 in 3 ways as a sum of consecutive naturals, for example, 76060 + ... + 1839052.

Almost surely, 2^{1688164525108} is an apocalyptic number.

It is an amenable number.

1688164525108 is a deficient number, since it is larger than the sum of its proper divisors (1266137410512).

1688164525108 is a wasteful number, since it uses less digits than its factorization.

1688164525108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002386 (or 2002384 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 55.

The spelling of 1688164525108 in words is "one trillion, six hundred eighty-eight billion, one hundred sixty-four million, five hundred twenty-five thousand, one hundred eight".