1681630293617 has 8 divisors (see below), whose sum is σ = 1694780305920. Its totient is φ = 1668525549040.

The previous prime is 1681630293613. The next prime is 1681630293619. The reversal of 1681630293617 is 7163920361861.

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 1681630293617 - 2² = 1681630293613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1681630293613) 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 7 ways as a sum of consecutive naturals, for example, 11242343 + ... + 11390940.

It is an arithmetic number, because the mean of its divisors is an integer number (211847538240).

Almost surely, 2^{1681630293617} is an apocalyptic number.

It is an amenable number.

1681630293617 is a deficient number, since it is larger than the sum of its proper divisors (13150012303).

1681630293617 is a wasteful number, since it uses less digits than its factorization.

1681630293617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22633863.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The spelling of 1681630293617 in words is "one trillion, six hundred eighty-one billion, six hundred thirty million, two hundred ninety-three thousand, six hundred seventeen".