78850516548673 has 2 divisors, whose sum is σ = 78850516548674. Its totient is φ = 78850516548672.

The previous prime is 78850516548659. The next prime is 78850516548679. The reversal of 78850516548673 is 37684561505887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78824867885569 + 25648663104 = 8878337^2 + 160152^2 .

It is a cyclic number.

It is not a de Polignac number, because 78850516548673 - 2⁴⁵ = 43666144459841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78850516548596 and 78850516548605.

It is not a weakly prime, because it can be changed into another prime (78850516548679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39425258274336 + 39425258274337.

It is an arithmetic number, because the mean of its divisors is an integer number (39425258274337).

Almost surely, 2^{78850516548673} is an apocalyptic number.

It is an amenable number.

78850516548673 is a deficient number, since it is larger than the sum of its proper divisors (1).

78850516548673 is an equidigital number, since it uses as much as digits as its factorization.

78850516548673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1354752000, while the sum is 73.

The spelling of 78850516548673 in words is "seventy-eight trillion, eight hundred fifty billion, five hundred sixteen million, five hundred forty-eight thousand, six hundred seventy-three".