13220134445543 has 8 divisors (see below), whose sum is σ = 13236213992976. Its totient is φ = 13204059971200.

The previous prime is 13220134445537. The next prime is 13220134445593. The reversal of 13220134445543 is 34554443102231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13220134445543 - 2⁴ = 13220134445527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13220134445543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220134445513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3959855 + ... + 6490047.

It is an arithmetic number, because the mean of its divisors is an integer number (1654526749122).

Almost surely, 2^{13220134445543} is an apocalyptic number.

13220134445543 is a deficient number, since it is larger than the sum of its proper divisors (16079547433).

13220134445543 is an equidigital number, since it uses as much as digits as its factorization.

13220134445543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536545.

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 13220134445543 its reverse (34554443102231), we get a palindrome (47774577547774).

The spelling of 13220134445543 in words is "thirteen trillion, two hundred twenty billion, one hundred thirty-four million, four hundred forty-five thousand, five hundred forty-three".