13265352446464 has 80 divisors (see below), whose sum is σ = 28076488188408. Its totient is φ = 6239719063552.

The previous prime is 13265352446449. The next prime is 13265352446471. The reversal of 13265352446464 is 46464425356231.

It can be written as a sum of positive squares in 4 ways, for example, as 11836352160000 + 1429000286464 = 3440400^2 + 1195408^2 .

It is a super-2 number, since 2×13265352446464² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19130202 + ... + 19811494.

Almost surely, 2^{13265352446464} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13265352446464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14038244094204).

13265352446464 is an abundant number, since it is smaller than the sum of its proper divisors (14811135741944).

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

13265352446464 is an equidigital number, since it uses as much as digits as its factorization.

13265352446464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683565 (or 683549 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 55.

The spelling of 13265352446464 in words is "thirteen trillion, two hundred sixty-five billion, three hundred fifty-two million, four hundred forty-six thousand, four hundred sixty-four".