8278453215 has 24 divisors (see below), whose sum is σ = 14381312400. Its totient is φ = 4405330944.

The previous prime is 8278453177. The next prime is 8278453321. The reversal of 8278453215 is 5123548728.

8278453215 is a `hidden beast` number, since 8 + 27 + 84 + 532 + 15 = 666.

It is not a de Polignac number, because 8278453215 - 2²⁸ = 8010017759 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184657 + ... + 225066.

It is an arithmetic number, because the mean of its divisors is an integer number (599221350).

Almost surely, 2^8278453215 is an apocalyptic number.

8278453215 is a deficient number, since it is larger than the sum of its proper divisors (6102859185).

8278453215 is a wasteful number, since it uses less digits than its factorization.

8278453215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410183 (or 410180 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 8278453215 is about 90986.0055997624. The cubic root of 8278453215 is about 2022.9402998626.

The spelling of 8278453215 in words is "eight billion, two hundred seventy-eight million, four hundred fifty-three thousand, two hundred fifteen".