13121452393 has 4 divisors (see below), whose sum is σ = 14995945600. Its totient is φ = 11246959188.

The previous prime is 13121452387. The next prime is 13121452403. The reversal of 13121452393 is 39325412131.

13121452393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39325412131 = 59 ⋅666532409.

It is a cyclic number.

It is not a de Polignac number, because 13121452393 - 2²¹ = 13119355241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121456393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 937246593 + ... + 937246606.

It is an arithmetic number, because the mean of its divisors is an integer number (3748986400).

Almost surely, 2^13121452393 is an apocalyptic number.

It is an amenable number.

13121452393 is a deficient number, since it is larger than the sum of its proper divisors (1874493207).

13121452393 is an equidigital number, since it uses as much as digits as its factorization.

13121452393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874493206.

The product of its digits is 19440, while the sum is 34.

The spelling of 13121452393 in words is "thirteen billion, one hundred twenty-one million, four hundred fifty-two thousand, three hundred ninety-three".