13181521297139 has 8 divisors (see below), whose sum is σ = 14195641320000. Its totient is φ = 12167423680896.

The previous prime is 13181521297129. The next prime is 13181521297169. The reversal of 13181521297139 is 93179212518131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13181521297139 - 2¹² = 13181521293043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13181521297129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4369787 + ... + 6742260.

It is an arithmetic number, because the mean of its divisors is an integer number (1774455165000).

Almost surely, 2^{13181521297139} is an apocalyptic number.

13181521297139 is a deficient number, since it is larger than the sum of its proper divisors (1014120022861).

13181521297139 is a wasteful number, since it uses less digits than its factorization.

13181521297139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11203309.

The product of its digits is 816480, while the sum is 53.

The spelling of 13181521297139 in words is "thirteen trillion, one hundred eighty-one billion, five hundred twenty-one million, two hundred ninety-seven thousand, one hundred thirty-nine".