51993636923 has 2 divisors, whose sum is σ = 51993636924. Its totient is φ = 51993636922.

The previous prime is 51993636889. The next prime is 51993636941. The reversal of 51993636923 is 32963639915.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51993636923 - 2¹⁸ = 51993374779 is a prime.

It is not a weakly prime, because it can be changed into another prime (51993636973) 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, 25996818461 + 25996818462.

It is an arithmetic number, because the mean of its divisors is an integer number (25996818462).

Almost surely, 2^51993636923 is an apocalyptic number.

51993636923 is a deficient number, since it is larger than the sum of its proper divisors (1).

51993636923 is an equidigital number, since it uses as much as digits as its factorization.

51993636923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7085880, while the sum is 56.

The spelling of 51993636923 in words is "fifty-one billion, nine hundred ninety-three million, six hundred thirty-six thousand, nine hundred twenty-three".