51705170039 has 2 divisors, whose sum is σ = 51705170040. Its totient is φ = 51705170038.

The previous prime is 51705170009. The next prime is 51705170053. The reversal of 51705170039 is 93007150715.

51705170039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51705170039 - 2²⁴ = 51688392823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51705169984 and 51705170011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51705170009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25852585019 + 25852585020.

It is an arithmetic number, because the mean of its divisors is an integer number (25852585020).

Almost surely, 2^51705170039 is an apocalyptic number.

51705170039 is a deficient number, since it is larger than the sum of its proper divisors (1).

51705170039 is an equidigital number, since it uses as much as digits as its factorization.

51705170039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33075, while the sum is 38.

The spelling of 51705170039 in words is "fifty-one billion, seven hundred five million, one hundred seventy thousand, thirty-nine".