1680671964502 has 16 divisors (see below), whose sum is σ = 2528112954240. Its totient is φ = 837970205632.

The previous prime is 1680671964497. The next prime is 1680671964509. The reversal of 1680671964502 is 2054691760861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680671964509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 676458 + ... + 1954210.

It is an arithmetic number, because the mean of its divisors is an integer number (158007059640).

Almost surely, 2^{1680671964502} is an apocalyptic number.

1680671964502 is a deficient number, since it is larger than the sum of its proper divisors (847440989738).

1680671964502 is a wasteful number, since it uses less digits than its factorization.

1680671964502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279607.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 1680671964502 in words is "one trillion, six hundred eighty billion, six hundred seventy-one million, nine hundred sixty-four thousand, five hundred two".