28013943823 has 2 divisors, whose sum is σ = 28013943824. Its totient is φ = 28013943822.

The previous prime is 28013943751. The next prime is 28013943847. The reversal of 28013943823 is 32834931082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28013943823 - 2²⁵ = 27980389391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28013943823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28013947823) 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 as a sum of consecutive naturals, namely, 14006971911 + 14006971912.

It is an arithmetic number, because the mean of its divisors is an integer number (14006971912).

Almost surely, 2^28013943823 is an apocalyptic number.

28013943823 is a deficient number, since it is larger than the sum of its proper divisors (1).

28013943823 is an equidigital number, since it uses as much as digits as its factorization.

28013943823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 28013943823 in words is "twenty-eight billion, thirteen million, nine hundred forty-three thousand, eight hundred twenty-three".