13915073213 has 4 divisors (see below), whose sum is σ = 13972812348. Its totient is φ = 13857334080.

The previous prime is 13915073173. The next prime is 13915073231. The reversal of 13915073213 is 31237051931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31237051931 = 17 ⋅1837473643.

It can be written as a sum of positive squares in 2 ways, for example, as 6029988409 + 7885084804 = 77653^2 + 88798^2 .

It is a cyclic number.

It is not a de Polignac number, because 13915073213 - 2⁸ = 13915072957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13915078213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28869206 + ... + 28869687.

It is an arithmetic number, because the mean of its divisors is an integer number (3493203087).

Almost surely, 2^13915073213 is an apocalyptic number.

It is an amenable number.

13915073213 is a deficient number, since it is larger than the sum of its proper divisors (57739135).

13915073213 is an equidigital number, since it uses as much as digits as its factorization.

13915073213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57739134.

The product of its (nonzero) digits is 17010, while the sum is 35.

The spelling of 13915073213 in words is "thirteen billion, nine hundred fifteen million, seventy-three thousand, two hundred thirteen".