78845281741 has 2 divisors, whose sum is σ = 78845281742. Its totient is φ = 78845281740.

The previous prime is 78845281727. The next prime is 78845281771. The reversal of 78845281741 is 14718254887.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50555723716 + 28289558025 = 224846^2 + 168195^2 .

It is a cyclic number.

It is not a de Polignac number, because 78845281741 - 2²³ = 78836893133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78845281771) 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, 39422640870 + 39422640871.

It is an arithmetic number, because the mean of its divisors is an integer number (39422640871).

Almost surely, 2^78845281741 is an apocalyptic number.

It is an amenable number.

78845281741 is a deficient number, since it is larger than the sum of its proper divisors (1).

78845281741 is an equidigital number, since it uses as much as digits as its factorization.

78845281741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4014080, while the sum is 55.

The spelling of 78845281741 in words is "seventy-eight billion, eight hundred forty-five million, two hundred eighty-one thousand, seven hundred forty-one".