1688555355055 has 8 divisors (see below), whose sum is σ = 2032279088112. Its totient is φ = 1346835842688.

The previous prime is 1688555355043. The next prime is 1688555355059. The reversal of 1688555355055 is 5505535558861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1688555355055 - 2⁹ = 1688555354543 is a prime.

It is a super-2 number, since 2×1688555355055² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1688555354984 and 1688555355002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1688555355059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501053317 + ... + 501056686.

It is an arithmetic number, because the mean of its divisors is an integer number (254034886014).

Almost surely, 2^{1688555355055} is an apocalyptic number.

1688555355055 is a deficient number, since it is larger than the sum of its proper divisors (343723733057).

1688555355055 is a wasteful number, since it uses less digits than its factorization.

1688555355055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002110345.

The product of its (nonzero) digits is 90000000, while the sum is 61.

The spelling of 1688555355055 in words is "one trillion, six hundred eighty-eight billion, five hundred fifty-five million, three hundred fifty-five thousand, fifty-five".