28269696559 has 12 divisors (see below), whose sum is σ = 32412248496. Its totient is φ = 24560095872.

The previous prime is 28269696557. The next prime is 28269696563. The reversal of 28269696559 is 95569696282.

It is not a de Polignac number, because 28269696559 - 2¹ = 28269696557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28269696494 and 28269696503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28269696551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4917019 + ... + 4922764.

It is an arithmetic number, because the mean of its divisors is an integer number (2701020708).

Almost surely, 2^28269696559 is an apocalyptic number.

28269696559 is a deficient number, since it is larger than the sum of its proper divisors (4142551937).

28269696559 is a wasteful number, since it uses less digits than its factorization.

28269696559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9839826 (or 9839813 counting only the distinct ones).

The product of its digits is 125971200, while the sum is 67.

The spelling of 28269696559 in words is "twenty-eight billion, two hundred sixty-nine million, six hundred ninety-six thousand, five hundred fifty-nine".