13340049523 has 4 divisors (see below), whose sum is σ = 13700591440. Its totient is φ = 12979507608.

The previous prime is 13340049497. The next prime is 13340049529. The reversal of 13340049523 is 32594004331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32594004331 = 7 ⋅4656286333.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13340049523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13340049529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180270903 + ... + 180270976.

It is an arithmetic number, because the mean of its divisors is an integer number (3425147860).

Almost surely, 2^13340049523 is an apocalyptic number.

13340049523 is a deficient number, since it is larger than the sum of its proper divisors (360541917).

13340049523 is an equidigital number, since it uses as much as digits as its factorization.

13340049523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360541916.

The product of its (nonzero) digits is 38880, while the sum is 34.

The spelling of 13340049523 in words is "thirteen billion, three hundred forty million, forty-nine thousand, five hundred twenty-three".