726168123229 has 2 divisors, whose sum is σ = 726168123230. Its totient is φ = 726168123228.

The previous prime is 726168123227. The next prime is 726168123253. The reversal of 726168123229 is 922321861627.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 663654622500 + 62513500729 = 814650^2 + 250027^2 .

It is a cyclic number.

It is not a de Polignac number, because 726168123229 - 2¹ = 726168123227 is a prime.

Together with 726168123227, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (726168123221) 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, 363084061614 + 363084061615.

It is an arithmetic number, because the mean of its divisors is an integer number (363084061615).

Almost surely, 2^726168123229 is an apocalyptic number.

It is an amenable number.

726168123229 is a deficient number, since it is larger than the sum of its proper divisors (1).

726168123229 is an equidigital number, since it uses as much as digits as its factorization.

726168123229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 49.

The spelling of 726168123229 in words is "seven hundred twenty-six billion, one hundred sixty-eight million, one hundred twenty-three thousand, two hundred twenty-nine".