1680683613461 has 8 divisors (see below), whose sum is σ = 1681989988824. Its totient is φ = 1679377427200.

The previous prime is 1680683613421. The next prime is 1680683613467. The reversal of 1680683613461 is 1643163860861.

It can be written as a sum of positive squares in 4 ways, for example, as 673006936900 + 1007676676561 = 820370^2 + 1003831^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1680683613461 - 2⁶ = 1680683613397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680683613467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21480311 + ... + 21558411.

It is an arithmetic number, because the mean of its divisors is an integer number (210248748603).

Almost surely, 2^{1680683613461} is an apocalyptic number.

It is an amenable number.

1680683613461 is a deficient number, since it is larger than the sum of its proper divisors (1306375363).

1680683613461 is a wasteful number, since it uses less digits than its factorization.

1680683613461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94551.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 1680683613461 in words is "one trillion, six hundred eighty billion, six hundred eighty-three million, six hundred thirteen thousand, four hundred sixty-one".