13529725748449 has 32 divisors (see below), whose sum is σ = 14899893829632. Its totient is φ = 12229836192000.

The previous prime is 13529725748447. The next prime is 13529725748471. The reversal of 13529725748449 is 94484752792531.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13529725748449 - 2¹ = 13529725748447 is a prime.

It is a super-4 number, since 4×13529725748449⁴ (a number of 54 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13529725748447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55411864 + ... + 55655494.

It is an arithmetic number, because the mean of its divisors is an integer number (465621682176).

Almost surely, 2^{13529725748449} is an apocalyptic number.

It is an amenable number.

13529725748449 is a deficient number, since it is larger than the sum of its proper divisors (1370168081183).

13529725748449 is a wasteful number, since it uses less digits than its factorization.

13529725748449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244477.

The product of its digits is 609638400, while the sum is 70.

The spelling of 13529725748449 in words is "thirteen trillion, five hundred twenty-nine billion, seven hundred twenty-five million, seven hundred forty-eight thousand, four hundred forty-nine".