12560454217 has 2 divisors, whose sum is σ = 12560454218. Its totient is φ = 12560454216.

The previous prime is 12560454191. The next prime is 12560454223. The reversal of 12560454217 is 71245406521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12030579856 + 529874361 = 109684^2 + 23019^2 .

It is an emirp because it is prime and its reverse (71245406521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12560454217 - 2²⁷ = 12426236489 is a prime.

It is not a weakly prime, because it can be changed into another prime (12560454617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6280227108 + 6280227109.

It is an arithmetic number, because the mean of its divisors is an integer number (6280227109).

Almost surely, 2^12560454217 is an apocalyptic number.

It is an amenable number.

12560454217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12560454217 is an equidigital number, since it uses as much as digits as its factorization.

12560454217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 12560454217 in words is "twelve billion, five hundred sixty million, four hundred fifty-four thousand, two hundred seventeen".