40320724349 has 2 divisors, whose sum is σ = 40320724350. Its totient is φ = 40320724348.

The previous prime is 40320724343. The next prime is 40320724421. The reversal of 40320724349 is 94342702304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21501823225 + 18818901124 = 146635^2 + 137182^2 .

It is a cyclic number.

It is not a de Polignac number, because 40320724349 - 2²⁴ = 40303947133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40320724343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20160362174 + 20160362175.

It is an arithmetic number, because the mean of its divisors is an integer number (20160362175).

Almost surely, 2^40320724349 is an apocalyptic number.

It is an amenable number.

40320724349 is a deficient number, since it is larger than the sum of its proper divisors (1).

40320724349 is an equidigital number, since it uses as much as digits as its factorization.

40320724349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 38.

The spelling of 40320724349 in words is "forty billion, three hundred twenty million, seven hundred twenty-four thousand, three hundred forty-nine".