13573131949439 has 4 divisors (see below), whose sum is σ = 13589624212656. Its totient is φ = 13556639686224.

The previous prime is 13573131949427. The next prime is 13573131949483. The reversal of 13573131949439 is 93494913137531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13573131949439 - 2⁸ = 13573131949183 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 (13573131942439) 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, 8246130374 + ... + 8246132019.

It is an arithmetic number, because the mean of its divisors is an integer number (3397406053164).

Almost surely, 2^{13573131949439} is an apocalyptic number.

13573131949439 is a deficient number, since it is larger than the sum of its proper divisors (16492263217).

13573131949439 is an equidigital number, since it uses as much as digits as its factorization.

13573131949439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16492263216.

The product of its digits is 33067440, while the sum is 62.

The spelling of 13573131949439 in words is "thirteen trillion, five hundred seventy-three billion, one hundred thirty-one million, nine hundred forty-nine thousand, four hundred thirty-nine".