1688545353172 has 48 divisors (see below), whose sum is σ = 3039702849792. Its totient is φ = 820333249920.

The previous prime is 1688545353167. The next prime is 1688545353181. The reversal of 1688545353172 is 2713535458861.

It is a super-3 number, since 3×1688545353172³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 22436518 + ... + 22511650.

It is an arithmetic number, because the mean of its divisors is an integer number (63327142704).

Almost surely, 2^{1688545353172} is an apocalyptic number.

It is an amenable number.

1688545353172 is a deficient number, since it is larger than the sum of its proper divisors (1351157496620).

1688545353172 is a wasteful number, since it uses less digits than its factorization.

1688545353172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76048 (or 76046 counting only the distinct ones).

The product of its digits is 24192000, while the sum is 58.

The spelling of 1688545353172 in words is "one trillion, six hundred eighty-eight billion, five hundred forty-five million, three hundred fifty-three thousand, one hundred seventy-two".