28078763243 has 2 divisors, whose sum is σ = 28078763244. Its totient is φ = 28078763242.

The previous prime is 28078763227. The next prime is 28078763281. The reversal of 28078763243 is 34236787082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28078763243 - 2⁴ = 28078763227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28078763191 and 28078763200.

It is not a weakly prime, because it can be changed into another prime (28078703243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14039381621 + 14039381622.

It is an arithmetic number, because the mean of its divisors is an integer number (14039381622).

Almost surely, 2^28078763243 is an apocalyptic number.

28078763243 is a deficient number, since it is larger than the sum of its proper divisors (1).

28078763243 is an equidigital number, since it uses as much as digits as its factorization.

28078763243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 50.

The spelling of 28078763243 in words is "twenty-eight billion, seventy-eight million, seven hundred sixty-three thousand, two hundred forty-three".