28312826663 has 12 divisors (see below), whose sum is σ = 31124879184. Its totient is φ = 25735485600.

The previous prime is 28312826617. The next prime is 28312826671. The reversal of 28312826663 is 36662821382.

It is a de Polignac number, because none of the positive numbers 2^k-28312826663 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 (28312822663) 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, 1474283 + ... + 1493363.

It is an arithmetic number, because the mean of its divisors is an integer number (2593739932).

Almost surely, 2^28312826663 is an apocalyptic number.

28312826663 is a deficient number, since it is larger than the sum of its proper divisors (2812052521).

28312826663 is a wasteful number, since it uses less digits than its factorization.

28312826663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31366 (or 31355 counting only the distinct ones).

The product of its digits is 995328, while the sum is 47.

The spelling of 28312826663 in words is "twenty-eight billion, three hundred twelve million, eight hundred twenty-six thousand, six hundred sixty-three".