51075710165 has 16 divisors (see below), whose sum is σ = 63411450480. Its totient is φ = 39447152640.

The previous prime is 51075710137. The next prime is 51075710207. The reversal of 51075710165 is 56101757015.

It can be written as a sum of positive squares in 8 ways, for example, as 15676792849 + 35398917316 = 125207^2 + 188146^2 .

It is not a de Polignac number, because 51075710165 - 2¹² = 51075706069 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1949855 + ... + 1975875.

It is an arithmetic number, because the mean of its divisors is an integer number (3963215655).

Almost surely, 2^51075710165 is an apocalyptic number.

It is an amenable number.

51075710165 is a deficient number, since it is larger than the sum of its proper divisors (12335740315).

51075710165 is a wasteful number, since it uses less digits than its factorization.

51075710165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39592.

The product of its (nonzero) digits is 36750, while the sum is 38.

The spelling of 51075710165 in words is "fifty-one billion, seventy-five million, seven hundred ten thousand, one hundred sixty-five".