13449603847681 has 8 divisors (see below), whose sum is σ = 13478751874080. Its totient is φ = 13420468920672.

The previous prime is 13449603847657. The next prime is 13449603847703. The reversal of 13449603847681 is 18674830694431.

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 13449603847681 - 2⁴³ = 4653510825473 is a prime.

It is a super-2 number, since 2×13449603847681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13449603847181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1217755 + ... + 5327488.

It is an arithmetic number, because the mean of its divisors is an integer number (1684843984260).

Almost surely, 2^{13449603847681} is an apocalyptic number.

It is an amenable number.

13449603847681 is a deficient number, since it is larger than the sum of its proper divisors (29148026399).

13449603847681 is an equidigital number, since it uses as much as digits as its factorization.

13449603847681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6549695.

The product of its (nonzero) digits is 83607552, while the sum is 64.

The spelling of 13449603847681 in words is "thirteen trillion, four hundred forty-nine billion, six hundred three million, eight hundred forty-seven thousand, six hundred eighty-one".