1680180350999 has 2 divisors, whose sum is σ = 1680180351000. Its totient is φ = 1680180350998.

The previous prime is 1680180350971. The next prime is 1680180351019. The reversal of 1680180350999 is 9990530810861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1680180350999 - 2²⁰ = 1680179302423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1680180350939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840090175499 + 840090175500.

It is an arithmetic number, because the mean of its divisors is an integer number (840090175500).

Almost surely, 2^{1680180350999} is an apocalyptic number.

1680180350999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1680180350999 is an equidigital number, since it uses as much as digits as its factorization.

1680180350999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 59.

The spelling of 1680180350999 in words is "one trillion, six hundred eighty billion, one hundred eighty million, three hundred fifty thousand, nine hundred ninety-nine".