51688392823 has 2 divisors, whose sum is σ = 51688392824. Its totient is φ = 51688392822.

The previous prime is 51688392773. The next prime is 51688392827. The reversal of 51688392823 is 32829388615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51688392823 - 2⁹ = 51688392311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51688392827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25844196411 + 25844196412.

It is an arithmetic number, because the mean of its divisors is an integer number (25844196412).

Almost surely, 2^51688392823 is an apocalyptic number.

51688392823 is a deficient number, since it is larger than the sum of its proper divisors (1).

51688392823 is an equidigital number, since it uses as much as digits as its factorization.

51688392823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4976640, while the sum is 55.

The spelling of 51688392823 in words is "fifty-one billion, six hundred eighty-eight million, three hundred ninety-two thousand, eight hundred twenty-three".