13212187243728 has 80 divisors (see below), whose sum is σ = 37328135745216. Its totient is φ = 3993608171520.

The previous prime is 13212187243727. The next prime is 13212187243819. The reversal of 13212187243728 is 82734278121231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212187243727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31305601 + ... + 31724832.

Almost surely, 2^{13212187243728} is an apocalyptic number.

It is an amenable number.

13212187243728 is an abundant number, since it is smaller than the sum of its proper divisors (24115948501488).

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

13212187243728 is a wasteful number, since it uses less digits than its factorization.

13212187243728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63030852 (or 63030846 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 51.

The spelling of 13212187243728 in words is "thirteen trillion, two hundred twelve billion, one hundred eighty-seven million, two hundred forty-three thousand, seven hundred twenty-eight".