65733868729 has 2 divisors, whose sum is σ = 65733868730. Its totient is φ = 65733868728.

The previous prime is 65733868723. The next prime is 65733868747. The reversal of 65733868729 is 92786833756.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63679513104 + 2054355625 = 252348^2 + 45325^2 .

It is a cyclic number.

It is not a de Polignac number, because 65733868729 - 2³ = 65733868721 is a prime.

It is not a weakly prime, because it can be changed into another prime (65733868721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32866934364 + 32866934365.

It is an arithmetic number, because the mean of its divisors is an integer number (32866934365).

Almost surely, 2^65733868729 is an apocalyptic number.

It is an amenable number.

65733868729 is a deficient number, since it is larger than the sum of its proper divisors (1).

65733868729 is an equidigital number, since it uses as much as digits as its factorization.

65733868729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91445760, while the sum is 64.

The spelling of 65733868729 in words is "sixty-five billion, seven hundred thirty-three million, eight hundred sixty-eight thousand, seven hundred twenty-nine".