28078703243 has 2 divisors, whose sum is σ = 28078703244. Its totient is φ = 28078703242.

The previous prime is 28078703231. The next prime is 28078703281. The reversal of 28078703243 is 34230787082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28078703243 - 2¹⁸ = 28078441099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28078703194 and 28078703203.

It is not a weakly prime, because it can be changed into another prime (28078703743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14039351621 + 14039351622.

It is an arithmetic number, because the mean of its divisors is an integer number (14039351622).

Almost surely, 2^28078703243 is an apocalyptic number.

28078703243 is a deficient number, since it is larger than the sum of its proper divisors (1).

28078703243 is an equidigital number, since it uses as much as digits as its factorization.

28078703243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584, while the sum is 44.

The spelling of 28078703243 in words is "twenty-eight billion, seventy-eight million, seven hundred three thousand, two hundred forty-three".