28342471243 has 2 divisors, whose sum is σ = 28342471244. Its totient is φ = 28342471242.

The previous prime is 28342471229. The next prime is 28342471279. The reversal of 28342471243 is 34217424382.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28342471243 - 2⁹ = 28342470731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28342471196 and 28342471205.

It is not a weakly prime, because it can be changed into another prime (28342471643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14171235621 + 14171235622.

It is an arithmetic number, because the mean of its divisors is an integer number (14171235622).

Almost surely, 2^28342471243 is an apocalyptic number.

28342471243 is a deficient number, since it is larger than the sum of its proper divisors (1).

28342471243 is an equidigital number, since it uses as much as digits as its factorization.

28342471243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 40.

The spelling of 28342471243 in words is "twenty-eight billion, three hundred forty-two million, four hundred seventy-one thousand, two hundred forty-three".