1688427162645 has 8 divisors (see below), whose sum is σ = 2701483460256. Its totient is φ = 900494486736.

The previous prime is 1688427162607. The next prime is 1688427162649. The reversal of 1688427162645 is 5462617248861.

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

It is not a de Polignac number, because 1688427162645 - 2¹⁷ = 1688427031573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1688427162649) 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 7 ways as a sum of consecutive naturals, for example, 56280905407 + ... + 56280905436.

It is an arithmetic number, because the mean of its divisors is an integer number (337685432532).

Almost surely, 2^{1688427162645} is an apocalyptic number.

1688427162645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1688427162645 is a deficient number, since it is larger than the sum of its proper divisors (1013056297611).

1688427162645 is a wasteful number, since it uses less digits than its factorization.

1688427162645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112561810851.

The product of its digits is 30965760, while the sum is 60.

The spelling of 1688427162645 in words is "one trillion, six hundred eighty-eight billion, four hundred twenty-seven million, one hundred sixty-two thousand, six hundred forty-five".