28136834563 has 16 divisors (see below), whose sum is σ = 29202166656. Its totient is φ = 27093306240.

The previous prime is 28136834543. The next prime is 28136834569. The reversal of 28136834563 is 36543863182.

It is a cyclic number.

It is not a de Polignac number, because 28136834563 - 2²⁵ = 28103280131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28136834569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1487481 + ... + 1506277.

It is an arithmetic number, because the mean of its divisors is an integer number (1825135416).

Almost surely, 2^28136834563 is an apocalyptic number.

28136834563 is a deficient number, since it is larger than the sum of its proper divisors (1065332093).

28136834563 is a wasteful number, since it uses less digits than its factorization.

28136834563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19374.

The product of its digits is 2488320, while the sum is 49.

The spelling of 28136834563 in words is "twenty-eight billion, one hundred thirty-six million, eight hundred thirty-four thousand, five hundred sixty-three".