51966943543 has 2 divisors, whose sum is σ = 51966943544. Its totient is φ = 51966943542.

The previous prime is 51966943537. The next prime is 51966943549. The reversal of 51966943543 is 34534966915.

It is a balanced prime because it is at equal distance from previous prime (51966943537) and next prime (51966943549).

It is a cyclic number.

It is not a de Polignac number, because 51966943543 - 2³³ = 43377008951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51966943549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25983471771 + 25983471772.

It is an arithmetic number, because the mean of its divisors is an integer number (25983471772).

Almost surely, 2^51966943543 is an apocalyptic number.

51966943543 is a deficient number, since it is larger than the sum of its proper divisors (1).

51966943543 is an equidigital number, since it uses as much as digits as its factorization.

51966943543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10497600, while the sum is 55.

The spelling of 51966943543 in words is "fifty-one billion, nine hundred sixty-six million, nine hundred forty-three thousand, five hundred forty-three".