28637773559 has 2 divisors, whose sum is σ = 28637773560. Its totient is φ = 28637773558.

The previous prime is 28637773553. The next prime is 28637773561. The reversal of 28637773559 is 95537773682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28637773559 - 2⁴ = 28637773543 is a prime.

Together with 28637773561, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28637773553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14318886779 + 14318886780.

It is an arithmetic number, because the mean of its divisors is an integer number (14318886780).

Almost surely, 2^28637773559 is an apocalyptic number.

28637773559 is a deficient number, since it is larger than the sum of its proper divisors (1).

28637773559 is an equidigital number, since it uses as much as digits as its factorization.

28637773559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66679200, while the sum is 62.

The spelling of 28637773559 in words is "twenty-eight billion, six hundred thirty-seven million, seven hundred seventy-three thousand, five hundred fifty-nine".