51271163334665 has 8 divisors (see below), whose sum is σ = 61525443519168. Its totient is φ = 41016898989360.

The previous prime is 51271163334623. The next prime is 51271163334691. The reversal of 51271163334665 is 56643336117215.

51271163334665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 51271163334665 - 2¹⁴ = 51271163318281 is a prime.

It is a super-3 number, since 3×51271163334665³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 5007794 + ... + 11296916.

It is an arithmetic number, because the mean of its divisors is an integer number (7690680439896).

Almost surely, 2^{51271163334665} is an apocalyptic number.

It is an amenable number.

51271163334665 is a deficient number, since it is larger than the sum of its proper divisors (10254280184503).

51271163334665 is a wasteful number, since it uses less digits than its factorization.

51271163334665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7919599.

The product of its digits is 8164800, while the sum is 53.

The spelling of 51271163334665 in words is "fifty-one trillion, two hundred seventy-one billion, one hundred sixty-three million, three hundred thirty-four thousand, six hundred sixty-five".