8478278216 has 32 divisors (see below), whose sum is σ = 17563703040. Its totient is φ = 3816307968.

The previous prime is 8478278213. The next prime is 8478278231. The reversal of 8478278216 is 6128728748.

It is not an unprimeable number, because it can be changed into a prime (8478278213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1352096 + ... + 1358351.

It is an arithmetic number, because the mean of its divisors is an integer number (548865720).

Almost surely, 2^8478278216 is an apocalyptic number.

It is an amenable number.

8478278216 is an abundant number, since it is smaller than the sum of its proper divisors (9085424824).

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

8478278216 is a wasteful number, since it uses less digits than its factorization.

8478278216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710493 (or 2710489 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 53.

The square root of 8478278216 is about 92077.5663014613. The cubic root of 8478278216 is about 2039.0876203261.

The spelling of 8478278216 in words is "eight billion, four hundred seventy-eight million, two hundred seventy-eight thousand, two hundred sixteen".