51441243461 has 2 divisors, whose sum is σ = 51441243462. Its totient is φ = 51441243460.

The previous prime is 51441243439. The next prime is 51441243467. The reversal of 51441243461 is 16434214415.

51441243461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42528750625 + 8912492836 = 206225^2 + 94406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51441243461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51441243467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25720621730 + 25720621731.

It is an arithmetic number, because the mean of its divisors is an integer number (25720621731).

Almost surely, 2^51441243461 is an apocalyptic number.

It is an amenable number.

51441243461 is a deficient number, since it is larger than the sum of its proper divisors (1).

51441243461 is an equidigital number, since it uses as much as digits as its factorization.

51441243461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 35.

Adding to 51441243461 its reverse (16434214415), we get a palindrome (67875457876).

The spelling of 51441243461 in words is "fifty-one billion, four hundred forty-one million, two hundred forty-three thousand, four hundred sixty-one".