12173764513 has 4 divisors (see below), whose sum is σ = 12244133268. Its totient is φ = 12103395760.

The previous prime is 12173764489. The next prime is 12173764543. The reversal of 12173764513 is 31546737121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31546737121 = 134401 ⋅234721.

It can be written as a sum of positive squares in 2 ways, for example, as 10580796769 + 1592967744 = 102863^2 + 39912^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12173764513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12173764543) 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, 35184118 + ... + 35184463.

It is an arithmetic number, because the mean of its divisors is an integer number (3061033317).

Almost surely, 2^12173764513 is an apocalyptic number.

It is an amenable number.

12173764513 is a deficient number, since it is larger than the sum of its proper divisors (70368755).

12173764513 is an equidigital number, since it uses as much as digits as its factorization.

12173764513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70368754.

The product of its digits is 105840, while the sum is 40.

The spelling of 12173764513 in words is "twelve billion, one hundred seventy-three million, seven hundred sixty-four thousand, five hundred thirteen".