878917104240013 has 2 divisors, whose sum is σ = 878917104240014. Its totient is φ = 878917104240012.

The previous prime is 878917104239963. The next prime is 878917104240037. The reversal of 878917104240013 is 310042401719878.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 730336680166564 + 148580424073449 = 27024742^2 + 12189357^2 .

It is a cyclic number.

It is not a de Polignac number, because 878917104240013 - 2²⁵ = 878917070685581 is a prime.

It is a super-3 number, since 3×878917104240013³ (a number of 46 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (878917104241013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 439458552120006 + 439458552120007.

It is an arithmetic number, because the mean of its divisors is an integer number (439458552120007).

Almost surely, 2^{878917104240013} is an apocalyptic number.

It is an amenable number.

878917104240013 is a deficient number, since it is larger than the sum of its proper divisors (1).

878917104240013 is an equidigital number, since it uses as much as digits as its factorization.

878917104240013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2709504, while the sum is 55.

The spelling of 878917104240013 in words is "eight hundred seventy-eight trillion, nine hundred seventeen billion, one hundred four million, two hundred forty thousand, thirteen".