12730459073 has 4 divisors (see below), whose sum is σ = 12970656468. Its totient is φ = 12490261680.

The previous prime is 12730459067. The next prime is 12730459099. The reversal of 12730459073 is 37095403721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37095403721 = 89 ⋅416802289.

It can be written as a sum of positive squares in 2 ways, for example, as 10830981184 + 1899477889 = 104072^2 + 43583^2 .

It is a cyclic number.

It is not a de Polignac number, because 12730459073 - 2⁸ = 12730458817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12730459073.

It is not an unprimeable number, because it can be changed into a prime (12730459003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120098618 + ... + 120098723.

It is an arithmetic number, because the mean of its divisors is an integer number (3242664117).

Almost surely, 2^12730459073 is an apocalyptic number.

It is an amenable number.

12730459073 is a deficient number, since it is larger than the sum of its proper divisors (240197395).

12730459073 is an equidigital number, since it uses as much as digits as its factorization.

12730459073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240197394.

The product of its (nonzero) digits is 158760, while the sum is 41.

The spelling of 12730459073 in words is "twelve billion, seven hundred thirty million, four hundred fifty-nine thousand, seventy-three".