28819570369 has 2 divisors, whose sum is σ = 28819570370. Its totient is φ = 28819570368.

The previous prime is 28819570361. The next prime is 28819570397. The reversal of 28819570369 is 96307591882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28794017344 + 25553025 = 169688^2 + 5055^2 .

It is a cyclic number.

It is not a de Polignac number, because 28819570369 - 2³ = 28819570361 is a prime.

It is a super-2 number, since 2×28819570369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28819570361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14409785184 + 14409785185.

It is an arithmetic number, because the mean of its divisors is an integer number (14409785185).

Almost surely, 2^28819570369 is an apocalyptic number.

It is an amenable number.

28819570369 is a deficient number, since it is larger than the sum of its proper divisors (1).

28819570369 is an equidigital number, since it uses as much as digits as its factorization.

28819570369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 28819570369 in words is "twenty-eight billion, eight hundred nineteen million, five hundred seventy thousand, three hundred sixty-nine".