1688545353101 has 4 divisors (see below), whose sum is σ = 1688892723804. Its totient is φ = 1688197982400.

The previous prime is 1688545353071. The next prime is 1688545353149. The reversal of 1688545353101 is 1013535458861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1150631655625 + 537913697476 = 1072675^2 + 733426^2 .

It is a cyclic number.

It is not a de Polignac number, because 1688545353101 - 2²² = 1688541158797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1688545353101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1688545353181) 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 3 ways as a sum of consecutive naturals, for example, 173678060 + ... + 173687781.

It is an arithmetic number, because the mean of its divisors is an integer number (422223180951).

Almost surely, 2^{1688545353101} is an apocalyptic number.

It is an amenable number.

1688545353101 is a deficient number, since it is larger than the sum of its proper divisors (347370703).

1688545353101 is an equidigital number, since it uses as much as digits as its factorization.

1688545353101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347370702.

The product of its (nonzero) digits is 1728000, while the sum is 50.

The spelling of 1688545353101 in words is "one trillion, six hundred eighty-eight billion, five hundred forty-five million, three hundred fifty-three thousand, one hundred one".