78845281259 has 2 divisors, whose sum is σ = 78845281260. Its totient is φ = 78845281258.

The previous prime is 78845281243. The next prime is 78845281267. The reversal of 78845281259 is 95218254887.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78845281259 - 2⁴ = 78845281243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78845281198 and 78845281207.

It is not a weakly prime, because it can be changed into another prime (78845281219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39422640629 + 39422640630.

It is an arithmetic number, because the mean of its divisors is an integer number (39422640630).

Almost surely, 2^78845281259 is an apocalyptic number.

78845281259 is a deficient number, since it is larger than the sum of its proper divisors (1).

78845281259 is an equidigital number, since it uses as much as digits as its factorization.

78845281259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12902400, while the sum is 59.

The spelling of 78845281259 in words is "seventy-eight billion, eight hundred forty-five million, two hundred eighty-one thousand, two hundred fifty-nine".