13542221345 has 4 divisors (see below), whose sum is σ = 16250665620. Its totient is φ = 10833777072.

The previous prime is 13542221333. The next prime is 13542221353. The reversal of 13542221345 is 54312224531.

13542221345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7548829456 + 5993391889 = 86884^2 + 77417^2 .

It is a cyclic number.

It is not a de Polignac number, because 13542221345 - 2¹⁸ = 13541959201 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 1354222130 + ... + 1354222139.

It is an arithmetic number, because the mean of its divisors is an integer number (4062666405).

Almost surely, 2^13542221345 is an apocalyptic number.

It is an amenable number.

13542221345 is a deficient number, since it is larger than the sum of its proper divisors (2708444275).

13542221345 is an equidigital number, since it uses as much as digits as its factorization.

13542221345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708444274.

The product of its digits is 28800, while the sum is 32.

Adding to 13542221345 its reverse (54312224531), we get a palindrome (67854445876).

The spelling of 13542221345 in words is "thirteen billion, five hundred forty-two million, two hundred twenty-one thousand, three hundred forty-five".