12961271417 has 2 divisors, whose sum is σ = 12961271418. Its totient is φ = 12961271416.

The previous prime is 12961271371. The next prime is 12961271459. The reversal of 12961271417 is 71417216921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12464382736 + 496888681 = 111644^2 + 22291^2 .

It is a cyclic number.

It is not a de Polignac number, because 12961271417 - 2³² = 8666304121 is a prime.

It is not a weakly prime, because it can be changed into another prime (12961271017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6480635708 + 6480635709.

It is an arithmetic number, because the mean of its divisors is an integer number (6480635709).

Almost surely, 2^12961271417 is an apocalyptic number.

It is an amenable number.

12961271417 is a deficient number, since it is larger than the sum of its proper divisors (1).

12961271417 is an equidigital number, since it uses as much as digits as its factorization.

12961271417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 41.

The spelling of 12961271417 in words is "twelve billion, nine hundred sixty-one million, two hundred seventy-one thousand, four hundred seventeen".