28115110563 has 4 divisors (see below), whose sum is σ = 37486814088. Its totient is φ = 18743407040.

The previous prime is 28115110549. The next prime is 28115110571. The reversal of 28115110563 is 36501151182.

It is a happy number.

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 28115110563 - 2⁸ = 28115110307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28115110063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4685851758 + ... + 4685851763.

It is an arithmetic number, because the mean of its divisors is an integer number (9371703522).

Almost surely, 2^28115110563 is an apocalyptic number.

28115110563 is a deficient number, since it is larger than the sum of its proper divisors (9371703525).

28115110563 is an equidigital number, since it uses as much as digits as its factorization.

28115110563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9371703524.

The product of its (nonzero) digits is 7200, while the sum is 33.

The spelling of 28115110563 in words is "twenty-eight billion, one hundred fifteen million, one hundred ten thousand, five hundred sixty-three".