878282513161 has 4 divisors (see below), whose sum is σ = 878364937492. Its totient is φ = 878200088832.

The previous prime is 878282513137. The next prime is 878282513191. The reversal of 878282513161 is 161315282878.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 320469210000 + 557813303161 = 566100^2 + 746869^2 .

It is a cyclic number.

It is not a de Polignac number, because 878282513161 - 2²⁵ = 878248958729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 878282513099 and 878282513108.

It is not an unprimeable number, because it can be changed into a prime (878282513191) 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 in 3 ways as a sum of consecutive naturals, for example, 41196180 + ... + 41217493.

It is an arithmetic number, because the mean of its divisors is an integer number (219591234373).

Almost surely, 2^878282513161 is an apocalyptic number.

It is an amenable number.

878282513161 is a deficient number, since it is larger than the sum of its proper divisors (82424331).

878282513161 is a wasteful number, since it uses less digits than its factorization.

878282513161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82424330.

The product of its digits is 1290240, while the sum is 52.

The spelling of 878282513161 in words is "eight hundred seventy-eight billion, two hundred eighty-two million, five hundred thirteen thousand, one hundred sixty-one".