28163247385 has 16 divisors (see below), whose sum is σ = 41594950656. Its totient is φ = 17826406848.

The previous prime is 28163247349. The next prime is 28163247397. The reversal of 28163247385 is 58374236182.

It is a cyclic number.

It is not a de Polignac number, because 28163247385 - 2⁹ = 28163246873 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30948169 + ... + 30949078.

It is an arithmetic number, because the mean of its divisors is an integer number (2599684416).

Almost surely, 2^28163247385 is an apocalyptic number.

It is an amenable number.

28163247385 is a deficient number, since it is larger than the sum of its proper divisors (13431703271).

28163247385 is a wasteful number, since it uses less digits than its factorization.

28163247385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61897272.

The product of its digits is 1935360, while the sum is 49.

The spelling of 28163247385 in words is "twenty-eight billion, one hundred sixty-three million, two hundred forty-seven thousand, three hundred eighty-five".