878577775878 has 32 divisors (see below), whose sum is σ = 1968704997120. Its totient is φ = 259040129760.

The previous prime is 878577775853. The next prime is 878577775879.

878577775878 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 878577775878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878577775879) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 179886538 + ... + 179891421.

It is an arithmetic number, because the mean of its divisors is an integer number (61522031160).

Almost surely, 2^878577775878 is an apocalyptic number.

878577775878 is an abundant number, since it is smaller than the sum of its proper divisors (1090127221242).

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

878577775878 is a wasteful number, since it uses less digits than its factorization.

878577775878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359778012.

The product of its digits is 12047257600, while the sum is 84.

The spelling of 878577775878 in words is "eight hundred seventy-eight billion, five hundred seventy-seven million, seven hundred seventy-five thousand, eight hundred seventy-eight".