878238627305841 has 40 divisors (see below), whose sum is σ = 1390180482943560. Its totient is φ = 550626820227072.

The previous prime is 878238627305747. The next prime is 878238627305861. The reversal of 878238627305841 is 148503726832878.

878238627305841 is a `hidden beast` number, since 8 + 7 + 8 + 2 + 3 + 8 + 6 + 2 + 7 + 30 + 584 + 1 = 666.

878238627305841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 594644270438241 + 283594356867600 = 24385329^2 + 16840260^2 .

It is not a de Polignac number, because 878238627305841 - 2³³ = 878230037371249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 878238627305841.

It is not an unprimeable number, because it can be changed into a prime (878238627305861) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 244085776 + ... + 247657713.

It is an arithmetic number, because the mean of its divisors is an integer number (34754512073589).

Almost surely, 2^{878238627305841} is an apocalyptic number.

878238627305841 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

878238627305841 is a deficient number, since it is larger than the sum of its proper divisors (511941855637719).

878238627305841 is a wasteful number, since it uses less digits than its factorization.

878238627305841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491744815 (or 491744806 counting only the distinct ones).

The product of its (nonzero) digits is 867041280, while the sum is 72.

The spelling of 878238627305841 in words is "eight hundred seventy-eight trillion, two hundred thirty-eight billion, six hundred twenty-seven million, three hundred five thousand, eight hundred forty-one".