51004043329 has 2 divisors, whose sum is σ = 51004043330. Its totient is φ = 51004043328.

The previous prime is 51004043291. The next prime is 51004043339. The reversal of 51004043329 is 92334040015.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29232450625 + 21771592704 = 170975^2 + 147552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51004043329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51004043329.

It is not a weakly prime, because it can be changed into another prime (51004043339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25502021664 + 25502021665.

It is an arithmetic number, because the mean of its divisors is an integer number (25502021665).

Almost surely, 2^51004043329 is an apocalyptic number.

It is an amenable number.

51004043329 is a deficient number, since it is larger than the sum of its proper divisors (1).

51004043329 is an equidigital number, since it uses as much as digits as its factorization.

51004043329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 51004043329 in words is "fifty-one billion, four million, forty-three thousand, three hundred twenty-nine".