51241145191 has 2 divisors, whose sum is σ = 51241145192. Its totient is φ = 51241145190.

The previous prime is 51241145173. The next prime is 51241145231. The reversal of 51241145191 is 19154114215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51241145191 - 2¹⁹ = 51240620903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51241145161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25620572595 + 25620572596.

It is an arithmetic number, because the mean of its divisors is an integer number (25620572596).

Almost surely, 2^51241145191 is an apocalyptic number.

51241145191 is a deficient number, since it is larger than the sum of its proper divisors (1).

51241145191 is an equidigital number, since it uses as much as digits as its factorization.

51241145191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 34.

The spelling of 51241145191 in words is "fifty-one billion, two hundred forty-one million, one hundred forty-five thousand, one hundred ninety-one".