13230640646 has 4 divisors (see below), whose sum is σ = 19845960972. Its totient is φ = 6615320322.

The previous prime is 13230640627. The next prime is 13230640649. The reversal of 13230640646 is 64604603231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13230640649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3307660160 + ... + 3307660163.

It is an arithmetic number, because the mean of its divisors is an integer number (4961490243).

Almost surely, 2^13230640646 is an apocalyptic number.

13230640646 is a deficient number, since it is larger than the sum of its proper divisors (6615320326).

13230640646 is an equidigital number, since it uses as much as digits as its factorization.

13230640646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6615320325.

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 13230640646 in words is "thirteen billion, two hundred thirty million, six hundred forty thousand, six hundred forty-six".