1272522467729 has 2 divisors, whose sum is σ = 1272522467730. Its totient is φ = 1272522467728.

The previous prime is 1272522467707. The next prime is 1272522467731. The reversal of 1272522467729 is 9277642252721.

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., 1256551321600 + 15971146129 = 1120960^2 + 126377^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272522467729 is a prime.

Together with 1272522467731, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1272522461729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636261233864 + 636261233865.

It is an arithmetic number, because the mean of its divisors is an integer number (636261233865).

Almost surely, 2^{1272522467729} is an apocalyptic number.

It is an amenable number.

1272522467729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272522467729 is an equidigital number, since it uses as much as digits as its factorization.

1272522467729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11854080, while the sum is 56.

The spelling of 1272522467729 in words is "one trillion, two hundred seventy-two billion, five hundred twenty-two million, four hundred sixty-seven thousand, seven hundred twenty-nine".