51684163059143 has 2 divisors, whose sum is σ = 51684163059144. Its totient is φ = 51684163059142.

The previous prime is 51684163059121. The next prime is 51684163059157. The reversal of 51684163059143 is 34195036148615.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51684163059143 - 2⁸ = 51684163058887 is a prime.

It is a super-2 number, since 2×51684163059143² (a number of 28 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51684163059103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25842081529571 + 25842081529572.

It is an arithmetic number, because the mean of its divisors is an integer number (25842081529572).

Almost surely, 2^{51684163059143} is an apocalyptic number.

51684163059143 is a deficient number, since it is larger than the sum of its proper divisors (1).

51684163059143 is an equidigital number, since it uses as much as digits as its factorization.

51684163059143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9331200, while the sum is 56.

The spelling of 51684163059143 in words is "fifty-one trillion, six hundred eighty-four billion, one hundred sixty-three million, fifty-nine thousand, one hundred forty-three".