1680920536880 has 320 divisors, whose sum is σ = 4507503251328. Its totient is φ = 577468170240.

The previous prime is 1680920536847. The next prime is 1680920536901. The reversal of 1680920536880 is 886350290861.

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 63 ways as a sum of consecutive naturals, for example, 678610202 + ... + 678612678.

Almost surely, 2^{1680920536880} is an apocalyptic number.

1680920536880 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 1680920536880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2253751625664).

1680920536880 is an abundant number, since it is smaller than the sum of its proper divisors (2826582714448).

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

1680920536880 is a wasteful number, since it uses less digits than its factorization.

1680920536880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2944 (or 2938 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 1680920536880 in words is "one trillion, six hundred eighty billion, nine hundred twenty million, five hundred thirty-six thousand, eight hundred eighty".