51684163059145 has 8 divisors (see below), whose sum is σ = 62046956755080. Its totient is φ = 41330023057920.

The previous prime is 51684163059143. The next prime is 51684163059157. The reversal of 51684163059145 is 54195036148615.

It can be written as a sum of positive squares in 4 ways, for example, as 11077853812281 + 40606309246864 = 3328341^2 + 6372308^2 .

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

It is not a de Polignac number, because 51684163059145 - 2¹ = 51684163059143 is a prime.

It is a super-2 number, since 2×51684163059145² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51684163059145.

It is not an unprimeable number, because it can be changed into a prime (51684163059143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2163410536 + ... + 2163434425.

It is an arithmetic number, because the mean of its divisors is an integer number (7755869594385).

Almost surely, 2^{51684163059145} is an apocalyptic number.

It is an amenable number.

51684163059145 is a deficient number, since it is larger than the sum of its proper divisors (10362793695935).

51684163059145 is a wasteful number, since it uses less digits than its factorization.

51684163059145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4326847355.

The product of its (nonzero) digits is 15552000, while the sum is 58.

The spelling of 51684163059145 in words is "fifty-one trillion, six hundred eighty-four billion, one hundred sixty-three million, fifty-nine thousand, one hundred forty-five".