51418578178663 has 2 divisors, whose sum is σ = 51418578178664. Its totient is φ = 51418578178662.

The previous prime is 51418578178559. The next prime is 51418578178691. The reversal of 51418578178663 is 36687187581415.

It is a happy number.

51418578178663 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 51418578178663 - 2⁹ = 51418578178151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51418578178592 and 51418578178601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51418578179663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25709289089331 + 25709289089332.

It is an arithmetic number, because the mean of its divisors is an integer number (25709289089332).

Almost surely, 2^{51418578178663} is an apocalyptic number.

51418578178663 is a deficient number, since it is larger than the sum of its proper divisors (1).

51418578178663 is an equidigital number, since it uses as much as digits as its factorization.

51418578178663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270950400, while the sum is 70.

The spelling of 51418578178663 in words is "fifty-one trillion, four hundred eighteen billion, five hundred seventy-eight million, one hundred seventy-eight thousand, six hundred sixty-three".