878136548078065 has 32 divisors (see below), whose sum is σ = 1062305536838400. Its totient is φ = 696831956110080.

The previous prime is 878136548078039. The next prime is 878136548078137. The reversal of 878136548078065 is 560870845631878.

It is not a de Polignac number, because 878136548078065 - 2²⁵ = 878136514523633 is a prime.

It is a super-2 number, since 2×878136548078065² (a number of 31 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 878136548077982 and 878136548078000.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 4179328231 + ... + 4179538339.

It is an arithmetic number, because the mean of its divisors is an integer number (33197048026200).

Almost surely, 2^{878136548078065} is an apocalyptic number.

It is an amenable number.

878136548078065 is a deficient number, since it is larger than the sum of its proper divisors (184168988760335).

878136548078065 is a wasteful number, since it uses less digits than its factorization.

878136548078065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220297.

The product of its (nonzero) digits is 2167603200, while the sum is 76.

The spelling of 878136548078065 in words is "eight hundred seventy-eight trillion, one hundred thirty-six billion, five hundred forty-eight million, seventy-eight thousand, sixty-five".