13113389906 has 4 divisors (see below), whose sum is σ = 19670084862. Its totient is φ = 6556694952.

The previous prime is 13113389899. The next prime is 13113389917. The reversal of 13113389906 is 60998331131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60998331131 = 31 ⋅1967688101.

It can be written as a sum of positive squares in only one way, i.e., 9466317025 + 3647072881 = 97295^2 + 60391^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3278347475 + ... + 3278347478.

Almost surely, 2^13113389906 is an apocalyptic number.

13113389906 is a deficient number, since it is larger than the sum of its proper divisors (6556694956).

13113389906 is an equidigital number, since it uses as much as digits as its factorization.

13113389906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6556694955.

The product of its (nonzero) digits is 104976, while the sum is 44.

The spelling of 13113389906 in words is "thirteen billion, one hundred thirteen million, three hundred eighty-nine thousand, nine hundred six".