8278205885 has 16 divisors (see below), whose sum is σ = 10389216384. Its totient is φ = 6320288832.

The previous prime is 8278205863. The next prime is 8278205891. The reversal of 8278205885 is 5885028728.

It is a cyclic number.

It is not a de Polignac number, because 8278205885 - 2¹⁸ = 8277943741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30302 + ... + 132191.

It is an arithmetic number, because the mean of its divisors is an integer number (649326024).

Almost surely, 2^8278205885 is an apocalyptic number.

It is an amenable number.

8278205885 is a deficient number, since it is larger than the sum of its proper divisors (2111010499).

8278205885 is a wasteful number, since it uses less digits than its factorization.

8278205885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162964.

The product of its (nonzero) digits is 2867200, while the sum is 53.

The square root of 8278205885 is about 90984.6464245479. The cubic root of 8278205885 is about 2022.9201536351.

The spelling of 8278205885 in words is "eight billion, two hundred seventy-eight million, two hundred five thousand, eight hundred eighty-five".