1680604515667 has 16 divisors (see below), whose sum is σ = 2095328742912. Its totient is φ = 1309543456320.

The previous prime is 1680604515659. The next prime is 1680604515739. The reversal of 1680604515667 is 7665154060861.

It is not a de Polignac number, because 1680604515667 - 2³ = 1680604515659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1680604515607) by changing a digit.

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, 8372583 + ... + 8570959.

It is an arithmetic number, because the mean of its divisors is an integer number (130958046432).

Almost surely, 2^{1680604515667} is an apocalyptic number.

1680604515667 is a deficient number, since it is larger than the sum of its proper divisors (414724227245).

1680604515667 is a wasteful number, since it uses less digits than its factorization.

1680604515667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308418.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 1680604515667 in words is "one trillion, six hundred eighty billion, six hundred four million, five hundred fifteen thousand, six hundred sixty-seven".