12001680539 has 2 divisors, whose sum is σ = 12001680540. Its totient is φ = 12001680538.

The previous prime is 12001680533. The next prime is 12001680583. The reversal of 12001680539 is 93508610021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001680539 is a prime.

It is a super-2 number, since 2×12001680539² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12001680499 and 12001680508.

It is not a weakly prime, because it can be changed into another prime (12001680533) 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 as a sum of consecutive naturals, namely, 6000840269 + 6000840270.

It is an arithmetic number, because the mean of its divisors is an integer number (6000840270).

Almost surely, 2^12001680539 is an apocalyptic number.

12001680539 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001680539 is an equidigital number, since it uses as much as digits as its factorization.

12001680539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 12001680539 in words is "twelve billion, one million, six hundred eighty thousand, five hundred thirty-nine".