51042512165611 has 2 divisors, whose sum is σ = 51042512165612. Its totient is φ = 51042512165610.

The previous prime is 51042512165507. The next prime is 51042512165647. The reversal of 51042512165611 is 11656121524015.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51042512165611 - 2¹⁷ = 51042512034539 is a prime.

It is not a weakly prime, because it can be changed into another prime (51042512165011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25521256082805 + 25521256082806.

It is an arithmetic number, because the mean of its divisors is an integer number (25521256082806).

Almost surely, 2^{51042512165611} is an apocalyptic number.

51042512165611 is a deficient number, since it is larger than the sum of its proper divisors (1).

51042512165611 is an equidigital number, since it uses as much as digits as its factorization.

51042512165611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72000, while the sum is 40.

Adding to 51042512165611 its reverse (11656121524015), we get a palindrome (62698633689626).

The spelling of 51042512165611 in words is "fifty-one trillion, forty-two billion, five hundred twelve million, one hundred sixty-five thousand, six hundred eleven".