51142320223 has 2 divisors, whose sum is σ = 51142320224. Its totient is φ = 51142320222.

The previous prime is 51142320211. The next prime is 51142320241. The reversal of 51142320223 is 32202324115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51142320223 - 2⁵ = 51142320191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51142320293) 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, 25571160111 + 25571160112.

It is an arithmetic number, because the mean of its divisors is an integer number (25571160112).

Almost surely, 2^51142320223 is an apocalyptic number.

51142320223 is a deficient number, since it is larger than the sum of its proper divisors (1).

51142320223 is an equidigital number, since it uses as much as digits as its factorization.

51142320223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 51142320223 its reverse (32202324115), we get a palindrome (83344644338).

The spelling of 51142320223 in words is "fifty-one billion, one hundred forty-two million, three hundred twenty thousand, two hundred twenty-three".