1688012352000 has 1280 divisors, whose sum is σ = 6771331607040. Its totient is φ = 412065792000.

The previous prime is 1688012351981. The next prime is 1688012352031. The reversal of 1688012352000 is 2532108861.

It is a happy number.

1688012352000 is a `hidden beast` number, since 1 + 6 + 8 + 8 + 0 + 123 + 520 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3661631770 + ... + 3661632230.

It is an arithmetic number, because the mean of its divisors is an integer number (5290102818).

Almost surely, 2^{1688012352000} is an apocalyptic number.

1688012352000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1688012352000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3385665803520).

1688012352000 is an abundant number, since it is smaller than the sum of its proper divisors (5083319255040).

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

1688012352000 is a wasteful number, since it uses less digits than its factorization.

1688012352000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 1688012352000 in words is "one trillion, six hundred eighty-eight billion, twelve million, three hundred fifty-two thousand".