13261121426216 has 64 divisors (see below), whose sum is σ = 27546746042880. Its totient is φ = 5952935070720.

The previous prime is 13261121426207. The next prime is 13261121426279. The reversal of 13261121426216 is 61262412116231.

It is a self number, because there is not a number n which added to its sum of digits gives 13261121426216.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4627895 + ... + 6923846.

It is an arithmetic number, because the mean of its divisors is an integer number (430417906920).

Almost surely, 2^{13261121426216} is an apocalyptic number.

It is an amenable number.

13261121426216 is an abundant number, since it is smaller than the sum of its proper divisors (14285624616664).

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

13261121426216 is a wasteful number, since it uses less digits than its factorization.

13261121426216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11552154 (or 11552150 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The spelling of 13261121426216 in words is "thirteen trillion, two hundred sixty-one billion, one hundred twenty-one million, four hundred twenty-six thousand, two hundred sixteen".