5281808878 has 4 divisors (see below), whose sum is σ = 7922713320. Its totient is φ = 2640904438.

The previous prime is 5281808843. The next prime is 5281808893. The reversal of 5281808878 is 8788081825.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1320452218 + ... + 1320452221.

It is an arithmetic number, because the mean of its divisors is an integer number (1980678330).

Almost surely, 2^5281808878 is an apocalyptic number.

5281808878 is a deficient number, since it is larger than the sum of its proper divisors (2640904442).

5281808878 is a wasteful number, since it uses less digits than its factorization.

5281808878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640904441.

The product of its (nonzero) digits is 2293760, while the sum is 55.

The square root of 5281808878 is about 72676.0543645567. The cubic root of 5281808878 is about 1741.5163684969.

The spelling of 5281808878 in words is "five billion, two hundred eighty-one million, eight hundred eight thousand, eight hundred seventy-eight".