13220355455 has 8 divisors (see below), whose sum is σ = 15921700512. Its totient is φ = 10538101728.

The previous prime is 13220355451. The next prime is 13220355487. The reversal of 13220355455 is 55455302231.

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 13220355455 - 2² = 13220355451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220355451) 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, 4771307 + ... + 4774076.

It is an arithmetic number, because the mean of its divisors is an integer number (1990212564).

Almost surely, 2^13220355455 is an apocalyptic number.

13220355455 is a deficient number, since it is larger than the sum of its proper divisors (2701345057).

13220355455 is an equidigital number, since it uses as much as digits as its factorization.

13220355455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9545665.

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 13220355455 its reverse (55455302231), we get a palindrome (68675657686).

The spelling of 13220355455 in words is "thirteen billion, two hundred twenty million, three hundred fifty-five thousand, four hundred fifty-five".