1688704045005 has 32 divisors (see below), whose sum is σ = 2775439440000. Its totient is φ = 876146395392.

The previous prime is 1688704044991. The next prime is 1688704045031. The reversal of 1688704045005 is 5005404078861.

It is not a de Polignac number, because 1688704045005 - 2¹⁰ = 1688704043981 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2926066 + ... + 3455324.

It is an arithmetic number, because the mean of its divisors is an integer number (86732482500).

Almost surely, 2^{1688704045005} is an apocalyptic number.

1688704045005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1688704045005 is a deficient number, since it is larger than the sum of its proper divisors (1086735394995).

1688704045005 is a wasteful number, since it uses less digits than its factorization.

1688704045005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535053.

The product of its (nonzero) digits is 1075200, while the sum is 48.

The spelling of 1688704045005 in words is "one trillion, six hundred eighty-eight billion, seven hundred four million, forty-five thousand, five".