51118660261759 has 2 divisors, whose sum is σ = 51118660261760. Its totient is φ = 51118660261758.

The previous prime is 51118660261741. The next prime is 51118660261777. The reversal of 51118660261759 is 95716206681115.

It is a balanced prime because it is at equal distance from previous prime (51118660261741) and next prime (51118660261777).

It is a cyclic number.

It is not a de Polignac number, because 51118660261759 - 2⁵ = 51118660261727 is a prime.

It is a super-2 number, since 2×51118660261759² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51118660261729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25559330130879 + 25559330130880.

It is an arithmetic number, because the mean of its divisors is an integer number (25559330130880).

Almost surely, 2^{51118660261759} is an apocalyptic number.

51118660261759 is a deficient number, since it is larger than the sum of its proper divisors (1).

51118660261759 is an equidigital number, since it uses as much as digits as its factorization.

51118660261759 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 58.

The spelling of 51118660261759 in words is "fifty-one trillion, one hundred eighteen billion, six hundred sixty million, two hundred sixty-one thousand, seven hundred fifty-nine".