13261421073624 has 16 divisors (see below), whose sum is σ = 33153552684120. Its totient is φ = 4420473691200.

The previous prime is 13261421073613. The next prime is 13261421073683. The reversal of 13261421073624 is 42637012416231.

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, 276279605677 + ... + 276279605724.

Almost surely, 2^{13261421073624} is an apocalyptic number.

It is an amenable number.

13261421073624 is an abundant number, since it is smaller than the sum of its proper divisors (19892131610496).

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

13261421073624 is a wasteful number, since it uses less digits than its factorization.

13261421073624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552559211410 (or 552559211406 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

Adding to 13261421073624 its reverse (42637012416231), we get a palindrome (55898433489855).

The spelling of 13261421073624 in words is "thirteen trillion, two hundred sixty-one billion, four hundred twenty-one million, seventy-three thousand, six hundred twenty-four".