51643578743 has 2 divisors, whose sum is σ = 51643578744. Its totient is φ = 51643578742.

The previous prime is 51643578733. The next prime is 51643578787. The reversal of 51643578743 is 34787534615.

51643578743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51643578743 - 2¹⁴ = 51643562359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51643578703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25821789371 + 25821789372.

It is an arithmetic number, because the mean of its divisors is an integer number (25821789372).

Almost surely, 2^51643578743 is an apocalyptic number.

51643578743 is a deficient number, since it is larger than the sum of its proper divisors (1).

51643578743 is an equidigital number, since it uses as much as digits as its factorization.

51643578743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8467200, while the sum is 53.

The spelling of 51643578743 in words is "fifty-one billion, six hundred forty-three million, five hundred seventy-eight thousand, seven hundred forty-three".