13263320640320 has 56 divisors (see below), whose sum is σ = 32015930033544. Its totient is φ = 5232652517376.

The previous prime is 13263320640299. The next prime is 13263320640389. The reversal of 13263320640320 is 2304602336231.

It can be written as a sum of positive squares in 4 ways, for example, as 1735774630144 + 11527546010176 = 1317488^2 + 3395224^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283866209 + ... + 283912928.

Almost surely, 2^{13263320640320} is an apocalyptic number.

13263320640320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13263320640320 is an abundant number, since it is smaller than the sum of its proper divisors (18752609393224).

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

13263320640320 is an equidigital number, since it uses as much as digits as its factorization.

13263320640320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567779227 (or 567779217 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 35.

Adding to 13263320640320 its reverse (2304602336231), we get a palindrome (15567922976551).

The spelling of 13263320640320 in words is "thirteen trillion, two hundred sixty-three billion, three hundred twenty million, six hundred forty thousand, three hundred twenty".