13884521725636 has 9 divisors (see below), whose sum is σ = 24297926061549. Its totient is φ = 6942257136624.

The previous prime is 13884521725619. The next prime is 13884521725639. The reversal of 13884521725636 is 63652712548831.

The square root of 13884521725636 is 3726194.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 13807095324100 + 77426401536 = 3715790^2 + 278256^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13884521725639) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6520840 + ... + 8383936.

Almost surely, 2^{13884521725636} is an apocalyptic number.

13884521725636 is the 3726194-th square number.

It is an amenable number.

13884521725636 is a deficient number, since it is larger than the sum of its proper divisors (10413404335913).

13884521725636 is an frugal number, since it uses more digits than its factorization.

13884521725636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726198 (or 1863099 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 61.

The spelling of 13884521725636 in words is "thirteen trillion, eight hundred eighty-four billion, five hundred twenty-one million, seven hundred twenty-five thousand, six hundred thirty-six".