28315853567 has 4 divisors (see below), whose sum is σ = 28337822160. Its totient is φ = 28293884976.

The previous prime is 28315853563. The next prime is 28315853593. The reversal of 28315853567 is 76535851382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28315853567 - 2² = 28315853563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28315853563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10982363 + ... + 10984940.

It is an arithmetic number, because the mean of its divisors is an integer number (7084455540).

Almost surely, 2^28315853567 is an apocalyptic number.

28315853567 is a deficient number, since it is larger than the sum of its proper divisors (21968593).

28315853567 is a wasteful number, since it uses less digits than its factorization.

28315853567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21968592.

The product of its digits is 6048000, while the sum is 53.

The spelling of 28315853567 in words is "twenty-eight billion, three hundred fifteen million, eight hundred fifty-three thousand, five hundred sixty-seven".