878766667878 has 64 divisors (see below), whose sum is σ = 2050192166400. Its totient is φ = 248147136000.

The previous prime is 878766667859. The next prime is 878766667943.

878766667878 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 878766667878.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3763978 + ... + 3990621.

It is an arithmetic number, because the mean of its divisors is an integer number (32034252600).

Almost surely, 2^878766667878 is an apocalyptic number.

878766667878 is an abundant number, since it is smaller than the sum of its proper divisors (1171425498522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

878766667878 is a wasteful number, since it uses less digits than its factorization.

878766667878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7754733.

The product of its digits is 12745506816, while the sum is 84.

The spelling of 878766667878 in words is "eight hundred seventy-eight billion, seven hundred sixty-six million, six hundred sixty-seven thousand, eight hundred seventy-eight".