28114780247 has 2 divisors, whose sum is σ = 28114780248. Its totient is φ = 28114780246.

The previous prime is 28114780237. The next prime is 28114780277. The reversal of 28114780247 is 74208741182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28114780247 - 2¹⁰ = 28114779223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28114780198 and 28114780207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28114780207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14057390123 + 14057390124.

It is an arithmetic number, because the mean of its divisors is an integer number (14057390124).

Almost surely, 2^28114780247 is an apocalyptic number.

28114780247 is a deficient number, since it is larger than the sum of its proper divisors (1).

28114780247 is an equidigital number, since it uses as much as digits as its factorization.

28114780247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 200704, while the sum is 44.

The spelling of 28114780247 in words is "twenty-eight billion, one hundred fourteen million, seven hundred eighty thousand, two hundred forty-seven".