1688884642064 has 20 divisors (see below), whose sum is σ = 3377769285120. Its totient is φ = 817202245920.

The previous prime is 1688884642057. The next prime is 1688884642073. The reversal of 1688884642064 is 4602464888861.

1688884642064 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1702504184 + ... + 1702505175.

It is an arithmetic number, because the mean of its divisors is an integer number (168888464256).

Almost surely, 2^{1688884642064} is an apocalyptic number.

It is an amenable number.

1688884642064 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1688884642064 is a wasteful number, since it uses less digits than its factorization.

1688884642064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405009398 (or 3405009392 counting only the distinct ones).

The product of its (nonzero) digits is 113246208, while the sum is 65.

The spelling of 1688884642064 in words is "one trillion, six hundred eighty-eight billion, eight hundred eighty-four million, six hundred forty-two thousand, sixty-four".