8666516275201 has 4 divisors (see below), whose sum is σ = 8667223008192. Its totient is φ = 8665809542212.

The previous prime is 8666516275199. The next prime is 8666516275211. The reversal of 8666516275201 is 1025726156668.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8666516275201 - 2¹ = 8666516275199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8666516275211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353348101 + ... + 353372626.

It is an arithmetic number, because the mean of its divisors is an integer number (2166805752048).

Almost surely, 2^{8666516275201} is an apocalyptic number.

It is an amenable number.

8666516275201 is a deficient number, since it is larger than the sum of its proper divisors (706732991).

8666516275201 is a wasteful number, since it uses less digits than its factorization.

8666516275201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706732990.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 8666516275201 in words is "eight trillion, six hundred sixty-six billion, five hundred sixteen million, two hundred seventy-five thousand, two hundred one".