13243113998 has 4 divisors (see below), whose sum is σ = 19864671000. Its totient is φ = 6621556998.

The previous prime is 13243113991. The next prime is 13243114007. The reversal of 13243113998 is 89931134231.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13243113991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3310778498 + ... + 3310778501.

It is an arithmetic number, because the mean of its divisors is an integer number (4966167750).

Almost surely, 2^13243113998 is an apocalyptic number.

13243113998 is a deficient number, since it is larger than the sum of its proper divisors (6621557002).

13243113998 is an equidigital number, since it uses as much as digits as its factorization.

13243113998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6621557001.

The product of its digits is 139968, while the sum is 44.

The spelling of 13243113998 in words is "thirteen billion, two hundred forty-three million, one hundred thirteen thousand, nine hundred ninety-eight".