127320076729 has 2 divisors, whose sum is σ = 127320076730. Its totient is φ = 127320076728.

The previous prime is 127320076727. The next prime is 127320076757. The reversal of 127320076729 is 927670023721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103371895225 + 23948181504 = 321515^2 + 154752^2 .

It is a cyclic number.

It is not a de Polignac number, because 127320076729 - 2¹ = 127320076727 is a prime.

Together with 127320076727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (127320076727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63660038364 + 63660038365.

It is an arithmetic number, because the mean of its divisors is an integer number (63660038365).

Almost surely, 2^127320076729 is an apocalyptic number.

It is an amenable number.

127320076729 is a deficient number, since it is larger than the sum of its proper divisors (1).

127320076729 is an equidigital number, since it uses as much as digits as its factorization.

127320076729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 444528, while the sum is 46.

The spelling of 127320076729 in words is "one hundred twenty-seven billion, three hundred twenty million, seventy-six thousand, seven hundred twenty-nine".