8217315914961 has 8 divisors (see below), whose sum is σ = 10956461986624. Its totient is φ = 5478190226640.

The previous prime is 8217315914957. The next prime is 8217315914989. The reversal of 8217315914961 is 1694195137128.

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

It is not a de Polignac number, because 8217315914961 - 2² = 8217315914957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8217315914761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4128970 + ... + 5786451.

It is an arithmetic number, because the mean of its divisors is an integer number (1369557748328).

Almost surely, 2^{8217315914961} is an apocalyptic number.

It is an amenable number.

8217315914961 is a deficient number, since it is larger than the sum of its proper divisors (2739146071663).

8217315914961 is a wasteful number, since it uses less digits than its factorization.

8217315914961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10191671.

The product of its digits is 3265920, while the sum is 57.

The spelling of 8217315914961 in words is "eight trillion, two hundred seventeen billion, three hundred fifteen million, nine hundred fourteen thousand, nine hundred sixty-one".