1686046256641 has 8 divisors (see below), whose sum is σ = 1709608947200. Its totient is φ = 1662539074560.

The previous prime is 1686046256617. The next prime is 1686046256669. The reversal of 1686046256641 is 1466526406861.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1686046256641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1686046256681) 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, 13815945 + ... + 13937446.

It is an arithmetic number, because the mean of its divisors is an integer number (213701118400).

Almost surely, 2^{1686046256641} is an apocalyptic number.

It is an amenable number.

1686046256641 is a deficient number, since it is larger than the sum of its proper divisors (23562690559).

1686046256641 is an equidigital number, since it uses as much as digits as its factorization.

1686046256641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27754239.

The product of its (nonzero) digits is 9953280, while the sum is 55.

The spelling of 1686046256641 in words is "one trillion, six hundred eighty-six billion, forty-six million, two hundred fifty-six thousand, six hundred forty-one".