51441115111 has 2 divisors, whose sum is σ = 51441115112. Its totient is φ = 51441115110.

The previous prime is 51441115039. The next prime is 51441115139. The reversal of 51441115111 is 11151114415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51441115111 - 2⁷ = 51441114983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51441115151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25720557555 + 25720557556.

It is an arithmetic number, because the mean of its divisors is an integer number (25720557556).

Almost surely, 2^51441115111 is an apocalyptic number.

51441115111 is a deficient number, since it is larger than the sum of its proper divisors (1).

51441115111 is an equidigital number, since it uses as much as digits as its factorization.

51441115111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 400, while the sum is 25.

Adding to 51441115111 its reverse (11151114415), we get a palindrome (62592229526).

The spelling of 51441115111 in words is "fifty-one billion, four hundred forty-one million, one hundred fifteen thousand, one hundred eleven".