1680949487480 has 16 divisors (see below), whose sum is σ = 3782136346920. Its totient is φ = 672379794976.

The previous prime is 1680949487471. The next prime is 1680949487519. The reversal of 1680949487480 is 847849490861.

It is a self number, because there is not a number n which added to its sum of digits gives 1680949487480.

It is a congruent 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, 21011868554 + ... + 21011868633.

Almost surely, 2^{1680949487480} is an apocalyptic number.

1680949487480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1680949487480 is an abundant number, since it is smaller than the sum of its proper divisors (2101186859440).

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

1680949487480 is a wasteful number, since it uses less digits than its factorization.

1680949487480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42023737198 (or 42023737194 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 68.

The spelling of 1680949487480 in words is "one trillion, six hundred eighty billion, nine hundred forty-nine million, four hundred eighty-seven thousand, four hundred eighty".