8271516664715 has 4 divisors (see below), whose sum is σ = 9925819997664. Its totient is φ = 6617213331768.

The previous prime is 8271516664709. The next prime is 8271516664739. The reversal of 8271516664715 is 5174666151728.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8271516664715 - 2⁸ = 8271516664459 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827151666467 + ... + 827151666476.

It is an arithmetic number, because the mean of its divisors is an integer number (2481454999416).

Almost surely, 2^{8271516664715} is an apocalyptic number.

8271516664715 is a deficient number, since it is larger than the sum of its proper divisors (1654303332949).

8271516664715 is a wasteful number, since it uses less digits than its factorization.

8271516664715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654303332948.

The product of its digits is 16934400, while the sum is 59.

The spelling of 8271516664715 in words is "eight trillion, two hundred seventy-one billion, five hundred sixteen million, six hundred sixty-four thousand, seven hundred fifteen".