727299340129 has 2 divisors, whose sum is σ = 727299340130. Its totient is φ = 727299340128.

The previous prime is 727299340121. The next prime is 727299340153. The reversal of 727299340129 is 921043992727.

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., 658012992400 + 69286347729 = 811180^2 + 263223^2 .

It is a cyclic number.

It is not a de Polignac number, because 727299340129 - 2³ = 727299340121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 727299340129.

It is not a weakly prime, because it can be changed into another prime (727299340121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 363649670064 + 363649670065.

It is an arithmetic number, because the mean of its divisors is an integer number (363649670065).

Almost surely, 2^727299340129 is an apocalyptic number.

It is an amenable number.

727299340129 is a deficient number, since it is larger than the sum of its proper divisors (1).

727299340129 is an equidigital number, since it uses as much as digits as its factorization.

727299340129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The spelling of 727299340129 in words is "seven hundred twenty-seven billion, two hundred ninety-nine million, three hundred forty thousand, one hundred twenty-nine".