13143112513521 has 8 divisors (see below), whose sum is σ = 17526326152320. Its totient is φ = 8760986941872.

The previous prime is 13143112513501. The next prime is 13143112513577. The reversal of 13143112513521 is 12531521134131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13143112513521 - 2²² = 13143108319217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13143112513501) 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, 271988601 + ... + 272036918.

It is an arithmetic number, because the mean of its divisors is an integer number (2190790769040).

Almost surely, 2^{13143112513521} is an apocalyptic number.

It is an amenable number.

13143112513521 is a deficient number, since it is larger than the sum of its proper divisors (4383213638799).

13143112513521 is an equidigital number, since it uses as much as digits as its factorization.

13143112513521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544033575.

The product of its digits is 10800, while the sum is 33.

Adding to 13143112513521 its reverse (12531521134131), we get a palindrome (25674633647652).

The spelling of 13143112513521 in words is "thirteen trillion, one hundred forty-three billion, one hundred twelve million, five hundred thirteen thousand, five hundred twenty-one".