13321011432320 has 32 divisors (see below), whose sum is σ = 31845542956920. Its totient is φ = 5328404572672.

The previous prime is 13321011432317. The next prime is 13321011432353. The reversal of 13321011432320 is 2323411012331.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 13321011432320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10407039542 + ... + 10407040821.

Almost surely, 2^{13321011432320} is an apocalyptic number.

13321011432320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13321011432320 is an abundant number, since it is smaller than the sum of its proper divisors (18524531524600).

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

13321011432320 is an equidigital number, since it uses as much as digits as its factorization.

13321011432320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20814080382 (or 20814080370 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 13321011432320 its reverse (2323411012331), we get a palindrome (15644422444651).

The spelling of 13321011432320 in words is "thirteen trillion, three hundred twenty-one billion, eleven million, four hundred thirty-two thousand, three hundred twenty".