51442112243 has 2 divisors, whose sum is σ = 51442112244. Its totient is φ = 51442112242.

The previous prime is 51442112233. The next prime is 51442112261. The reversal of 51442112243 is 34221124415.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51442112243 - 2¹⁶ = 51442046707 is a prime.

It is not a weakly prime, because it can be changed into another prime (51442112233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25721056121 + 25721056122.

It is an arithmetic number, because the mean of its divisors is an integer number (25721056122).

Almost surely, 2^51442112243 is an apocalyptic number.

51442112243 is a deficient number, since it is larger than the sum of its proper divisors (1).

51442112243 is an equidigital number, since it uses as much as digits as its factorization.

51442112243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 29.

Adding to 51442112243 its reverse (34221124415), we get a palindrome (85663236658).

The spelling of 51442112243 in words is "fifty-one billion, four hundred forty-two million, one hundred twelve thousand, two hundred forty-three".