13521320005144 has 16 divisors (see below), whose sum is σ = 28974257154000. Its totient is φ = 5794851430752.

The previous prime is 13521320005129. The next prime is 13521320005189. The reversal of 13521320005144 is 44150002312531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120726071419 + ... + 120726071530.

It is an arithmetic number, because the mean of its divisors is an integer number (1810891072125).

Almost surely, 2^{13521320005144} is an apocalyptic number.

13521320005144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

13521320005144 is an abundant number, since it is smaller than the sum of its proper divisors (15452937148856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13521320005144 is a wasteful number, since it uses less digits than its factorization.

13521320005144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241452142962 (or 241452142958 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 13521320005144 its reverse (44150002312531), we get a palindrome (57671322317675).

The spelling of 13521320005144 in words is "thirteen trillion, five hundred twenty-one billion, three hundred twenty million, five thousand, one hundred forty-four".