73146006809 has 2 divisors, whose sum is σ = 73146006810. Its totient is φ = 73146006808.

The previous prime is 73146006779. The next prime is 73146006821. The reversal of 73146006809 is 90860064137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64175075584 + 8970931225 = 253328^2 + 94715^2 .

It is an emirp because it is prime and its reverse (90860064137) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73146006809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73146006809.

It is not a weakly prime, because it can be changed into another prime (73146006889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36573003404 + 36573003405.

It is an arithmetic number, because the mean of its divisors is an integer number (36573003405).

Almost surely, 2^73146006809 is an apocalyptic number.

It is an amenable number.

73146006809 is a deficient number, since it is larger than the sum of its proper divisors (1).

73146006809 is an equidigital number, since it uses as much as digits as its factorization.

73146006809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 73146006809 in words is "seventy-three billion, one hundred forty-six million, six thousand, eight hundred nine".