28356056329 has 2 divisors, whose sum is σ = 28356056330. Its totient is φ = 28356056328.

The previous prime is 28356056327. The next prime is 28356056387. The reversal of 28356056329 is 92365065382.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26463806329 + 1892250000 = 162677^2 + 43500^2 .

It is a cyclic number.

It is not a de Polignac number, because 28356056329 - 2¹ = 28356056327 is a prime.

Together with 28356056327, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28356056327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14178028164 + 14178028165.

It is an arithmetic number, because the mean of its divisors is an integer number (14178028165).

Almost surely, 2^28356056329 is an apocalyptic number.

It is an amenable number.

28356056329 is a deficient number, since it is larger than the sum of its proper divisors (1).

28356056329 is an equidigital number, since it uses as much as digits as its factorization.

28356056329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 49.

It can be divided in two parts, 283560 and 56329, that added together give a square (339889 = 583²).

The spelling of 28356056329 in words is "twenty-eight billion, three hundred fifty-six million, fifty-six thousand, three hundred twenty-nine".