721302457829 has 2 divisors, whose sum is σ = 721302457830. Its totient is φ = 721302457828.

The previous prime is 721302457823. The next prime is 721302457849. The reversal of 721302457829 is 928754203127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 581523680929 + 139778776900 = 762577^2 + 373870^2 .

It is a cyclic number.

It is not a de Polignac number, because 721302457829 - 2²⁴ = 721285680613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (721302457823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360651228914 + 360651228915.

It is an arithmetic number, because the mean of its divisors is an integer number (360651228915).

Almost surely, 2^721302457829 is an apocalyptic number.

It is an amenable number.

721302457829 is a deficient number, since it is larger than the sum of its proper divisors (1).

721302457829 is an equidigital number, since it uses as much as digits as its factorization.

721302457829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 50.

The spelling of 721302457829 in words is "seven hundred twenty-one billion, three hundred two million, four hundred fifty-seven thousand, eight hundred twenty-nine".