28763617369 has 2 divisors, whose sum is σ = 28763617370. Its totient is φ = 28763617368.

The previous prime is 28763617367. The next prime is 28763617387. The reversal of 28763617369 is 96371636782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25357377600 + 3406239769 = 159240^2 + 58363^2 .

It is a cyclic number.

It is not a de Polignac number, because 28763617369 - 2¹ = 28763617367 is a prime.

It is a super-2 number, since 2×28763617369² (a number of 22 digits) contains 22 as substring.

Together with 28763617367, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28763617367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14381808684 + 14381808685.

It is an arithmetic number, because the mean of its divisors is an integer number (14381808685).

Almost surely, 2^28763617369 is an apocalyptic number.

It is an amenable number.

28763617369 is a deficient number, since it is larger than the sum of its proper divisors (1).

28763617369 is an equidigital number, since it uses as much as digits as its factorization.

28763617369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 58.

The spelling of 28763617369 in words is "twenty-eight billion, seven hundred sixty-three million, six hundred seventeen thousand, three hundred sixty-nine".