12916303681 has 2 divisors, whose sum is σ = 12916303682. Its totient is φ = 12916303680.

The previous prime is 12916303669. The next prime is 12916303709. The reversal of 12916303681 is 18630361921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12346765456 + 569538225 = 111116^2 + 23865^2 .

It is a cyclic number.

It is not a de Polignac number, because 12916303681 - 2²⁵ = 12882749249 is a prime.

It is a super-2 number, since 2×12916303681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12916301681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6458151840 + 6458151841.

It is an arithmetic number, because the mean of its divisors is an integer number (6458151841).

Almost surely, 2^12916303681 is an apocalyptic number.

It is an amenable number.

12916303681 is a deficient number, since it is larger than the sum of its proper divisors (1).

12916303681 is an equidigital number, since it uses as much as digits as its factorization.

12916303681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 12916303681 in words is "twelve billion, nine hundred sixteen million, three hundred three thousand, six hundred eighty-one".