878715865873 has 8 divisors (see below), whose sum is σ = 926895110400. Its totient is φ = 830729725488.

The previous prime is 878715865847. The next prime is 878715865901. The reversal of 878715865873 is 378568517878.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 878715865873 - 2¹³ = 878715857681 is a prime.

It is a super-2 number, since 2×878715865873² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 878715865796 and 878715865805.

It is not an unprimeable number, because it can be changed into a prime (878715868873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48266686 + ... + 48284887.

It is an arithmetic number, because the mean of its divisors is an integer number (115861888800).

Almost surely, 2^878715865873 is an apocalyptic number.

It is an amenable number.

878715865873 is a deficient number, since it is larger than the sum of its proper divisors (48179244527).

878715865873 is a wasteful number, since it uses less digits than its factorization.

878715865873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96552071.

The product of its digits is 632217600, while the sum is 73.

The spelling of 878715865873 in words is "eight hundred seventy-eight billion, seven hundred fifteen million, eight hundred sixty-five thousand, eight hundred seventy-three".