51433917329 has 2 divisors, whose sum is σ = 51433917330. Its totient is φ = 51433917328.

The previous prime is 51433917317. The next prime is 51433917361. The reversal of 51433917329 is 92371933415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41893902400 + 9540014929 = 204680^2 + 97673^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51433917329 is a prime.

It is not a weakly prime, because it can be changed into another prime (51433917629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25716958664 + 25716958665.

It is an arithmetic number, because the mean of its divisors is an integer number (25716958665).

Almost surely, 2^51433917329 is an apocalyptic number.

It is an amenable number.

51433917329 is a deficient number, since it is larger than the sum of its proper divisors (1).

51433917329 is an equidigital number, since it uses as much as digits as its factorization.

51433917329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 47.

The spelling of 51433917329 in words is "fifty-one billion, four hundred thirty-three million, nine hundred seventeen thousand, three hundred twenty-nine".