8547478878 has 16 divisors (see below), whose sum is σ = 17246241936. Its totient is φ = 2823945600.

The previous prime is 8547478861. The next prime is 8547478931. The reversal of 8547478878 is 8788747458.

It is a super-2 number, since 2×8547478878² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6302773 + ... + 6304128.

It is an arithmetic number, because the mean of its divisors is an integer number (1077890121).

Almost surely, 2^8547478878 is an apocalyptic number.

8547478878 is an abundant number, since it is smaller than the sum of its proper divisors (8698763058).

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

8547478878 is a wasteful number, since it uses less digits than its factorization.

8547478878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12607019.

The product of its digits is 112394240, while the sum is 66.

The square root of 8547478878 is about 92452.5763729708. The cubic root of 8547478878 is about 2044.6203488969.

The spelling of 8547478878 in words is "eight billion, five hundred forty-seven million, four hundred seventy-eight thousand, eight hundred seventy-eight".