13123515039 has 4 divisors (see below), whose sum is σ = 17498020056. Its totient is φ = 8749010024.

The previous prime is 13123514977. The next prime is 13123515059. The reversal of 13123515039 is 93051532131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93051532131 = 3 ⋅31017177377.

It is a cyclic number.

It is not a de Polignac number, because 13123515039 - 2⁹ = 13123514527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123515059) 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, 2187252504 + ... + 2187252509.

It is an arithmetic number, because the mean of its divisors is an integer number (4374505014).

Almost surely, 2^13123515039 is an apocalyptic number.

13123515039 is a deficient number, since it is larger than the sum of its proper divisors (4374505017).

13123515039 is an equidigital number, since it uses as much as digits as its factorization.

13123515039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374505016.

The product of its (nonzero) digits is 12150, while the sum is 33.

The spelling of 13123515039 in words is "thirteen billion, one hundred twenty-three million, five hundred fifteen thousand, thirty-nine".