12724326073 has 4 divisors (see below), whose sum is σ = 13472815860. Its totient is φ = 11975836288.

The previous prime is 12724326071. The next prime is 12724326077. The reversal of 12724326073 is 37062342721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8860833424 + 3863492649 = 94132^2 + 62157^2 .

It is a cyclic number.

It is not a de Polignac number, because 12724326073 - 2¹ = 12724326071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12724326071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374244868 + ... + 374244901.

It is an arithmetic number, because the mean of its divisors is an integer number (3368203965).

Almost surely, 2^12724326073 is an apocalyptic number.

It is an amenable number.

12724326073 is a deficient number, since it is larger than the sum of its proper divisors (748489787).

12724326073 is an equidigital number, since it uses as much as digits as its factorization.

12724326073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748489786.

The product of its (nonzero) digits is 84672, while the sum is 37.

Adding to 12724326073 its reverse (37062342721), we get a palindrome (49786668794).

The spelling of 12724326073 in words is "twelve billion, seven hundred twenty-four million, three hundred twenty-six thousand, seventy-three".