13501321055 has 32 divisors (see below), whose sum is σ = 17659166400. Its totient is φ = 9870336000.

The previous prime is 13501321051. The next prime is 13501321063. The reversal of 13501321055 is 55012310531.

It is a happy number.

It is not a de Polignac number, because 13501321055 - 2² = 13501321051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13501321051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4409225 + ... + 4412285.

It is an arithmetic number, because the mean of its divisors is an integer number (551848950).

Almost surely, 2^13501321055 is an apocalyptic number.

13501321055 is a deficient number, since it is larger than the sum of its proper divisors (4157845345).

13501321055 is a wasteful number, since it uses less digits than its factorization.

13501321055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4715.

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 13501321055 its reverse (55012310531), we get a palindrome (68513631586).

The spelling of 13501321055 in words is "thirteen billion, five hundred one million, three hundred twenty-one thousand, fifty-five".