73373734009 has 2 divisors, whose sum is σ = 73373734010. Its totient is φ = 73373734008.

The previous prime is 73373734003. The next prime is 73373734079. The reversal of 73373734009 is 90043737337.

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., 43377225984 + 29996508025 = 208272^2 + 173195^2 .

It is a cyclic number.

It is not a de Polignac number, because 73373734009 - 2⁵ = 73373733977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73373734009.

It is not a weakly prime, because it can be changed into another prime (73373734003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36686867004 + 36686867005.

It is an arithmetic number, because the mean of its divisors is an integer number (36686867005).

Almost surely, 2^73373734009 is an apocalyptic number.

It is an amenable number.

73373734009 is a deficient number, since it is larger than the sum of its proper divisors (1).

73373734009 is an equidigital number, since it uses as much as digits as its factorization.

73373734009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1000188, while the sum is 46.

The spelling of 73373734009 in words is "seventy-three billion, three hundred seventy-three million, seven hundred thirty-four thousand, nine".