13550320145 has 8 divisors (see below), whose sum is σ = 16285755240. Its totient is φ = 10823342080.

The previous prime is 13550320129. The next prime is 13550320163. The reversal of 13550320145 is 54102305531.

13550320145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2640726544 + 10909593601 = 51388^2 + 104449^2 .

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

It is not a de Polignac number, because 13550320145 - 2⁴ = 13550320129 is a prime.

It is a super-2 number, since 2×13550320145² (a number of 21 digits) contains 22 as substring.

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, 2110730 + ... + 2117139.

It is an arithmetic number, because the mean of its divisors is an integer number (2035719405).

Almost surely, 2^13550320145 is an apocalyptic number.

It is an amenable number.

13550320145 is a deficient number, since it is larger than the sum of its proper divisors (2735435095).

13550320145 is an equidigital number, since it uses as much as digits as its factorization.

13550320145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4228515.

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 13550320145 its reverse (54102305531), we get a palindrome (67652625676).

The spelling of 13550320145 in words is "thirteen billion, five hundred fifty million, three hundred twenty thousand, one hundred forty-five".