1272416927917 has 2 divisors, whose sum is σ = 1272416927918. Its totient is φ = 1272416927916.

The previous prime is 1272416927909. The next prime is 1272416927923. The reversal of 1272416927917 is 7197296142721.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 887993367556 + 384423560361 = 942334^2 + 620019^2 .

It is a cyclic number.

It is not a de Polignac number, because 1272416927917 - 2³ = 1272416927909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272416925917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636208463958 + 636208463959.

It is an arithmetic number, because the mean of its divisors is an integer number (636208463959).

Almost surely, 2^{1272416927917} is an apocalyptic number.

It is an amenable number.

1272416927917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272416927917 is an equidigital number, since it uses as much as digits as its factorization.

1272416927917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5334336, while the sum is 58.

The spelling of 1272416927917 in words is "one trillion, two hundred seventy-two billion, four hundred sixteen million, nine hundred twenty-seven thousand, nine hundred seventeen".