64333966729 has 2 divisors, whose sum is σ = 64333966730. Its totient is φ = 64333966728.

The previous prime is 64333966721. The next prime is 64333966733. The reversal of 64333966729 is 92766933346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60160806729 + 4173160000 = 245277^2 + 64600^2 .

It is a cyclic number.

It is not a de Polignac number, because 64333966729 - 2³ = 64333966721 is a prime.

It is not a weakly prime, because it can be changed into another prime (64333966721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32166983364 + 32166983365.

It is an arithmetic number, because the mean of its divisors is an integer number (32166983365).

Almost surely, 2^64333966729 is an apocalyptic number.

It is an amenable number.

64333966729 is a deficient number, since it is larger than the sum of its proper divisors (1).

64333966729 is an equidigital number, since it uses as much as digits as its factorization.

64333966729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26453952, while the sum is 58.

The spelling of 64333966729 in words is "sixty-four billion, three hundred thirty-three million, nine hundred sixty-six thousand, seven hundred twenty-nine".