878268444862878 has 48 divisors (see below), whose sum is σ = 1954348883229600. Its totient is φ = 284843268266688.

The previous prime is 878268444862871. The next prime is 878268444862951.

878268444862878 is a `hidden beast` number, since 8 + 7 + 8 + 2 + 6 + 8 + 44 + 486 + 2 + 87 + 8 = 666.

878268444862878 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×878268444862878² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878268444862871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 477502551 + ... + 479338317.

It is an arithmetic number, because the mean of its divisors is an integer number (40715601733950).

Almost surely, 2^{878268444862878} is an apocalyptic number.

878268444862878 is an abundant number, since it is smaller than the sum of its proper divisors (1076080438366722).

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

878268444862878 is a wasteful number, since it uses less digits than its factorization.

878268444862878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554161 (or 2554158 counting only the distinct ones).

The product of its digits is 118380036096, while the sum is 90.

The spelling of 878268444862878 in words is "eight hundred seventy-eight trillion, two hundred sixty-eight billion, four hundred forty-four million, eight hundred sixty-two thousand, eight hundred seventy-eight".