28965934423 has 2 divisors, whose sum is σ = 28965934424. Its totient is φ = 28965934422.

The previous prime is 28965934421. The next prime is 28965934429. The reversal of 28965934423 is 32443956982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28965934423 - 2¹ = 28965934421 is a prime.

Together with 28965934421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28965934421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14482967211 + 14482967212.

It is an arithmetic number, because the mean of its divisors is an integer number (14482967212).

Almost surely, 2^28965934423 is an apocalyptic number.

28965934423 is a deficient number, since it is larger than the sum of its proper divisors (1).

28965934423 is an equidigital number, since it uses as much as digits as its factorization.

28965934423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 55.

The spelling of 28965934423 in words is "twenty-eight billion, nine hundred sixty-five million, nine hundred thirty-four thousand, four hundred twenty-three".