729598472081 has 2 divisors, whose sum is σ = 729598472082. Its totient is φ = 729598472080.

The previous prime is 729598472059. The next prime is 729598472089. The reversal of 729598472081 is 180274895927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 596472003856 + 133126468225 = 772316^2 + 364865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729598472081 is a prime.

It is a super-2 number, since 2×729598472081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (729598472089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364799236040 + 364799236041.

It is an arithmetic number, because the mean of its divisors is an integer number (364799236041).

Almost surely, 2^729598472081 is an apocalyptic number.

It is an amenable number.

729598472081 is a deficient number, since it is larger than the sum of its proper divisors (1).

729598472081 is an equidigital number, since it uses as much as digits as its factorization.

729598472081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20321280, while the sum is 62.

The spelling of 729598472081 in words is "seven hundred twenty-nine billion, five hundred ninety-eight million, four hundred seventy-two thousand, eighty-one".