51705092039 has 2 divisors, whose sum is σ = 51705092040. Its totient is φ = 51705092038.

The previous prime is 51705091993. The next prime is 51705092053. The reversal of 51705092039 is 93029050715.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51705092039 is a prime.

It is a super-4 number, since 4×51705092039⁴ (a number of 44 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 51705091987 and 51705092005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51705092059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25852546019 + 25852546020.

It is an arithmetic number, because the mean of its divisors is an integer number (25852546020).

Almost surely, 2^51705092039 is an apocalyptic number.

51705092039 is a deficient number, since it is larger than the sum of its proper divisors (1).

51705092039 is an equidigital number, since it uses as much as digits as its factorization.

51705092039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 85050, while the sum is 41.

The spelling of 51705092039 in words is "fifty-one billion, seven hundred five million, ninety-two thousand, thirty-nine".