1688969054808 has 96 divisors (see below), whose sum is σ = 5227944134400. Its totient is φ = 482545715904.

The previous prime is 1688969054803. The next prime is 1688969054819. The reversal of 1688969054808 is 8084509698861.

1688969054808 is a `hidden beast` number, since 1 + 6 + 8 + 89 + 69 + 0 + 5 + 480 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1688969054803) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 24966133 + ... + 25033691.

It is an arithmetic number, because the mean of its divisors is an integer number (54457751400).

Almost surely, 2^{1688969054808} is an apocalyptic number.

1688969054808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1688969054808 is an abundant number, since it is smaller than the sum of its proper divisors (3538975079592).

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

1688969054808 is a wasteful number, since it uses less digits than its factorization.

1688969054808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117181 (or 117174 counting only the distinct ones).

The product of its (nonzero) digits is 238878720, while the sum is 72.

The spelling of 1688969054808 in words is "one trillion, six hundred eighty-eight billion, nine hundred sixty-nine million, fifty-four thousand, eight hundred eight".