51612222317 has 2 divisors, whose sum is σ = 51612222318. Its totient is φ = 51612222316.

The previous prime is 51612222301. The next prime is 51612222329. The reversal of 51612222317 is 71322221615.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41103102121 + 10509120196 = 202739^2 + 102514^2 .

It is a cyclic number.

It is not a de Polignac number, because 51612222317 - 2⁴ = 51612222301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51612222367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25806111158 + 25806111159.

It is an arithmetic number, because the mean of its divisors is an integer number (25806111159).

Almost surely, 2^51612222317 is an apocalyptic number.

It is an amenable number.

51612222317 is a deficient number, since it is larger than the sum of its proper divisors (1).

51612222317 is an equidigital number, since it uses as much as digits as its factorization.

51612222317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The spelling of 51612222317 in words is "fifty-one billion, six hundred twelve million, two hundred twenty-two thousand, three hundred seventeen".