724720153737449 has 2 divisors, whose sum is σ = 724720153737450. Its totient is φ = 724720153737448.

The previous prime is 724720153737427. The next prime is 724720153737469. The reversal of 724720153737449 is 944737351027427.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 688150981647424 + 36569172090025 = 26232632^2 + 6047245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-724720153737449 is a prime.

It is not a weakly prime, because it can be changed into another prime (724720153737409) 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, 362360076868724 + 362360076868725.

It is an arithmetic number, because the mean of its divisors is an integer number (362360076868725).

Almost surely, 2^{724720153737449} is an apocalyptic number.

It is an amenable number.

724720153737449 is a deficient number, since it is larger than the sum of its proper divisors (1).

724720153737449 is an equidigital number, since it uses as much as digits as its factorization.

724720153737449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248935680, while the sum is 65.

The spelling of 724720153737449 in words is "seven hundred twenty-four trillion, seven hundred twenty billion, one hundred fifty-three million, seven hundred thirty-seven thousand, four hundred forty-nine".