8126278217 has 8 divisors (see below), whose sum is σ = 8615131392. Its totient is φ = 7651594800.

The previous prime is 8126278213. The next prime is 8126278219. The reversal of 8126278217 is 7128726218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8126278217 - 2² = 8126278213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8126278213) 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, 3541259 + ... + 3543552.

It is an arithmetic number, because the mean of its divisors is an integer number (1076891424).

Almost surely, 2^8126278217 is an apocalyptic number.

It is an amenable number.

8126278217 is a deficient number, since it is larger than the sum of its proper divisors (488853175).

8126278217 is a wasteful number, since it uses less digits than its factorization.

8126278217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7084879.

The product of its digits is 150528, while the sum is 44.

The square root of 8126278217 is about 90145.8718799702. The cubic root of 8126278217 is about 2010.4682965363.

The spelling of 8126278217 in words is "eight billion, one hundred twenty-six million, two hundred seventy-eight thousand, two hundred seventeen".