1680881940264 has 64 divisors (see below), whose sum is σ = 4351605667200. Its totient is φ = 540413846784.

The previous prime is 1680881940259. The next prime is 1680881940289. The reversal of 1680881940264 is 4620491880861.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 575707 + ... + 1921770.

It is an arithmetic number, because the mean of its divisors is an integer number (67993838550).

Almost surely, 2^{1680881940264} is an apocalyptic number.

It is an amenable number.

1680881940264 is an abundant number, since it is smaller than the sum of its proper divisors (2670723726936).

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

1680881940264 is a wasteful number, since it uses less digits than its factorization.

1680881940264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498482 (or 2498478 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 57.

The spelling of 1680881940264 in words is "one trillion, six hundred eighty billion, eight hundred eighty-one million, nine hundred forty thousand, two hundred sixty-four".