28129956773327 has 2 divisors, whose sum is σ = 28129956773328. Its totient is φ = 28129956773326.

The previous prime is 28129956773249. The next prime is 28129956773333. The reversal of 28129956773327 is 72337765992182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28129956773327 - 2¹² = 28129956769231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28129956773377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14064978386663 + 14064978386664.

It is an arithmetic number, because the mean of its divisors is an integer number (14064978386664).

Almost surely, 2^{28129956773327} is an apocalyptic number.

28129956773327 is a deficient number, since it is larger than the sum of its proper divisors (1).

28129956773327 is an equidigital number, since it uses as much as digits as its factorization.

28129956773327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480090240, while the sum is 71.

The spelling of 28129956773327 in words is "twenty-eight trillion, one hundred twenty-nine billion, nine hundred fifty-six million, seven hundred seventy-three thousand, three hundred twenty-seven".