729641663797 has 2 divisors, whose sum is σ = 729641663798. Its totient is φ = 729641663796.

The previous prime is 729641663771. The next prime is 729641663809. The reversal of 729641663797 is 797366146927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440532203076 + 289109460721 = 663726^2 + 537689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729641663797 is a prime.

It is a super-3 number, since 3×729641663797³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (729641663767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364820831898 + 364820831899.

It is an arithmetic number, because the mean of its divisors is an integer number (364820831899).

Almost surely, 2^729641663797 is an apocalyptic number.

It is an amenable number.

729641663797 is a deficient number, since it is larger than the sum of its proper divisors (1).

729641663797 is an equidigital number, since it uses as much as digits as its factorization.

729641663797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144027072, while the sum is 67.

The spelling of 729641663797 in words is "seven hundred twenty-nine billion, six hundred forty-one million, six hundred sixty-three thousand, seven hundred ninety-seven".