73520453009 has 2 divisors, whose sum is σ = 73520453010. Its totient is φ = 73520453008.

The previous prime is 73520452987. The next prime is 73520453023. The reversal of 73520453009 is 90035402537.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47550163600 + 25970289409 = 218060^2 + 161153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73520453009 is a prime.

It is not a weakly prime, because it can be changed into another prime (73520453029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36760226504 + 36760226505.

It is an arithmetic number, because the mean of its divisors is an integer number (36760226505).

Almost surely, 2^73520453009 is an apocalyptic number.

It is an amenable number.

73520453009 is a deficient number, since it is larger than the sum of its proper divisors (1).

73520453009 is an equidigital number, since it uses as much as digits as its factorization.

73520453009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 113400, while the sum is 38.

The spelling of 73520453009 in words is "seventy-three billion, five hundred twenty million, four hundred fifty-three thousand, nine".