28374509986369 has 2 divisors, whose sum is σ = 28374509986370. Its totient is φ = 28374509986368.

The previous prime is 28374509986367. The next prime is 28374509986441. The reversal of 28374509986369 is 96368990547382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26991505762225 + 1383004224144 = 5195335^2 + 1176012^2 .

It is a cyclic number.

It is not a de Polignac number, because 28374509986369 - 2¹ = 28374509986367 is a prime.

It is a super-2 number, since 2×28374509986369² (a number of 28 digits) contains 22 as substring.

Together with 28374509986367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28374509986367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14187254993184 + 14187254993185.

It is an arithmetic number, because the mean of its divisors is an integer number (14187254993185).

Almost surely, 2^{28374509986369} is an apocalyptic number.

It is an amenable number.

28374509986369 is a deficient number, since it is larger than the sum of its proper divisors (1).

28374509986369 is an equidigital number, since it uses as much as digits as its factorization.

28374509986369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4232632320, while the sum is 79.

The spelling of 28374509986369 in words is "twenty-eight trillion, three hundred seventy-four billion, five hundred nine million, nine hundred eighty-six thousand, three hundred sixty-nine".