1680687674882 has 8 divisors (see below), whose sum is σ = 2555566190796. Its totient is φ = 828832277952.

The previous prime is 1680687674873. The next prime is 1680687674921. The reversal of 1680687674882 is 2884767860861.

It can be written as a sum of positive squares in 2 ways, for example, as 1525103972401 + 155583702481 = 1234951^2 + 394441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1680687674882² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5755779563 + ... + 5755779854.

Almost surely, 2^{1680687674882} is an apocalyptic number.

1680687674882 is a deficient number, since it is larger than the sum of its proper divisors (874878515914).

1680687674882 is a wasteful number, since it uses less digits than its factorization.

1680687674882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11511559492.

The product of its (nonzero) digits is 346816512, while the sum is 71.

The spelling of 1680687674882 in words is "one trillion, six hundred eighty billion, six hundred eighty-seven million, six hundred seventy-four thousand, eight hundred eighty-two".