1680645333156 has 48 divisors (see below), whose sum is σ = 3967445986560. Its totient is φ = 553668295680.

The previous prime is 1680645333151. The next prime is 1680645333193. The reversal of 1680645333156 is 6513335460861.

It is a junction number, because it is equal to n+sod(n) for n = 1680645333099 and 1680645333108.

It is not an unprimeable number, because it can be changed into a prime (1680645333151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167155 + ... + 1840986.

It is an arithmetic number, because the mean of its divisors is an integer number (82655124720).

Almost surely, 2^{1680645333156} is an apocalyptic number.

It is an amenable number.

1680645333156 is an abundant number, since it is smaller than the sum of its proper divisors (2286800653404).

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

1680645333156 is a wasteful number, since it uses less digits than its factorization.

1680645333156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008964 (or 2008962 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 51.

The spelling of 1680645333156 in words is "one trillion, six hundred eighty billion, six hundred forty-five million, three hundred thirty-three thousand, one hundred fifty-six".