8517218315 has 8 divisors (see below), whose sum is σ = 10235630448. Its totient is φ = 6803795680.

The previous prime is 8517218261. The next prime is 8517218327. The reversal of 8517218315 is 5138127158.

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

It is not a de Polignac number, because 8517218315 - 2¹² = 8517214219 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1243616 + ... + 1250445.

It is an arithmetic number, because the mean of its divisors is an integer number (1279453806).

Almost surely, 2^8517218315 is an apocalyptic number.

8517218315 is a deficient number, since it is larger than the sum of its proper divisors (1718412133).

8517218315 is a wasteful number, since it uses less digits than its factorization.

8517218315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2494749.

The product of its digits is 67200, while the sum is 41.

The square root of 8517218315 is about 92288.7767553563. The cubic root of 8517218315 is about 2042.2046455096.

The spelling of 8517218315 in words is "eight billion, five hundred seventeen million, two hundred eighteen thousand, three hundred fifteen".