12500616217 has 2 divisors, whose sum is σ = 12500616218. Its totient is φ = 12500616216.

The previous prime is 12500616151. The next prime is 12500616259. The reversal of 12500616217 is 71261600521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11056312201 + 1444304016 = 105149^2 + 38004^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12500616217 is a prime.

It is not a weakly prime, because it can be changed into another prime (12500616617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6250308108 + 6250308109.

It is an arithmetic number, because the mean of its divisors is an integer number (6250308109).

Almost surely, 2^12500616217 is an apocalyptic number.

It is an amenable number.

12500616217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12500616217 is an equidigital number, since it uses as much as digits as its factorization.

12500616217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 12500616217 in words is "twelve billion, five hundred million, six hundred sixteen thousand, two hundred seventeen".