51705397027 has 2 divisors, whose sum is σ = 51705397028. Its totient is φ = 51705397026.

The previous prime is 51705397021. The next prime is 51705397049. The reversal of 51705397027 is 72079350715.

51705397027 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 51705397027 - 2³ = 51705397019 is a prime.

It is not a weakly prime, because it can be changed into another prime (51705397021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25852698513 + 25852698514.

It is an arithmetic number, because the mean of its divisors is an integer number (25852698514).

Almost surely, 2^51705397027 is an apocalyptic number.

51705397027 is a deficient number, since it is larger than the sum of its proper divisors (1).

51705397027 is an equidigital number, since it uses as much as digits as its factorization.

51705397027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 463050, while the sum is 46.

The spelling of 51705397027 in words is "fifty-one billion, seven hundred five million, three hundred ninety-seven thousand, twenty-seven".