13220364648864 has 96 divisors (see below), whose sum is σ = 35847409731840. Its totient is φ = 4262901322752.

The previous prime is 13220364648809. The next prime is 13220364648899. The reversal of 13220364648864 is 46884646302231.

It is a tau number, because it is divible by the number of its divisors (96).

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, 10142584 + ... + 11371575.

It is an arithmetic number, because the mean of its divisors is an integer number (373410518040).

Almost surely, 2^{13220364648864} is an apocalyptic number.

It is an amenable number.

13220364648864 is an abundant number, since it is smaller than the sum of its proper divisors (22627045082976).

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

13220364648864 is a wasteful number, since it uses less digits than its factorization.

13220364648864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21514382 (or 21514374 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 57.

The spelling of 13220364648864 in words is "thirteen trillion, two hundred twenty billion, three hundred sixty-four million, six hundred forty-eight thousand, eight hundred sixty-four".