878840625425317 has 2 divisors, whose sum is σ = 878840625425318. Its totient is φ = 878840625425316.

The previous prime is 878840625425261. The next prime is 878840625425401. The reversal of 878840625425317 is 713524526048878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 599004136142721 + 279836489282596 = 24474561^2 + 16728314^2 .

It is a cyclic number.

It is not a de Polignac number, because 878840625425317 - 2²⁷ = 878840491207589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878840625428317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439420312712658 + 439420312712659.

It is an arithmetic number, because the mean of its divisors is an integer number (439420312712659).

Almost surely, 2^{878840625425317} is an apocalyptic number.

It is an amenable number.

878840625425317 is a deficient number, since it is larger than the sum of its proper divisors (1).

878840625425317 is an equidigital number, since it uses as much as digits as its factorization.

878840625425317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 722534400, while the sum is 70.

The spelling of 878840625425317 in words is "eight hundred seventy-eight trillion, eight hundred forty billion, six hundred twenty-five million, four hundred twenty-five thousand, three hundred seventeen".