13523083591681 has 8 divisors (see below), whose sum is σ = 14341690867680. Its totient is φ = 12707046512448.

The previous prime is 13523083591663. The next prime is 13523083591769. The reversal of 13523083591681 is 18619538032531.

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 13523083591681 - 2⁹ = 13523083591169 is a prime.

It is a super-2 number, since 2×13523083591681² (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 (13523083598681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642538351 + ... + 642559396.

It is an arithmetic number, because the mean of its divisors is an integer number (1792711358460).

Almost surely, 2^{13523083591681} is an apocalyptic number.

It is an amenable number.

13523083591681 is a deficient number, since it is larger than the sum of its proper divisors (818607275999).

13523083591681 is a wasteful number, since it uses less digits than its factorization.

13523083591681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285098383.

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 13523083591681 in words is "thirteen trillion, five hundred twenty-three billion, eighty-three million, five hundred ninety-one thousand, six hundred eighty-one".