51242130223 has 2 divisors, whose sum is σ = 51242130224. Its totient is φ = 51242130222.

The previous prime is 51242130217. The next prime is 51242130271. The reversal of 51242130223 is 32203124215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51242130223 - 2¹³ = 51242122031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51242130623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25621065111 + 25621065112.

It is an arithmetic number, because the mean of its divisors is an integer number (25621065112).

Almost surely, 2^51242130223 is an apocalyptic number.

51242130223 is a deficient number, since it is larger than the sum of its proper divisors (1).

51242130223 is an equidigital number, since it uses as much as digits as its factorization.

51242130223 is an evil number, because the sum of its binary digits is even.

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

Adding to 51242130223 its reverse (32203124215), we get a palindrome (83445254438).

The spelling of 51242130223 in words is "fifty-one billion, two hundred forty-two million, one hundred thirty thousand, two hundred twenty-three".