78545410765973 has 2 divisors, whose sum is σ = 78545410765974. Its totient is φ = 78545410765972.

The previous prime is 78545410765937. The next prime is 78545410765999. The reversal of 78545410765973 is 37956701454587.

Together with previous prime (78545410765937) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42952517269489 + 35592893496484 = 6553817^2 + 5965978^2 .

It is a cyclic number.

It is not a de Polignac number, because 78545410765973 - 2⁴⁰ = 77445899138197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78545410765897 and 78545410765906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78545410765273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39272705382986 + 39272705382987.

It is an arithmetic number, because the mean of its divisors is an integer number (39272705382987).

Almost surely, 2^{78545410765973} is an apocalyptic number.

It is an amenable number.

78545410765973 is a deficient number, since it is larger than the sum of its proper divisors (1).

78545410765973 is an equidigital number, since it uses as much as digits as its factorization.

78545410765973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 889056000, while the sum is 71.

The spelling of 78545410765973 in words is "seventy-eight trillion, five hundred forty-five billion, four hundred ten million, seven hundred sixty-five thousand, nine hundred seventy-three".