13643222345 has 4 divisors (see below), whose sum is σ = 16371866820. Its totient is φ = 10914577872.

The previous prime is 13643222267. The next prime is 13643222377. The reversal of 13643222345 is 54322234631.

It is a happy number.

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 1730809609 + 11912412736 = 41603^2 + 109144^2 .

It is a cyclic number.

It is not a de Polignac number, because 13643222345 - 2¹⁰ = 13643221321 is a prime.

It is a super-2 number, since 2×13643222345² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1364322230 + ... + 1364322239.

It is an arithmetic number, because the mean of its divisors is an integer number (4092966705).

Almost surely, 2^13643222345 is an apocalyptic number.

It is an amenable number.

13643222345 is a deficient number, since it is larger than the sum of its proper divisors (2728644475).

13643222345 is an equidigital number, since it uses as much as digits as its factorization.

13643222345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728644474.

The product of its digits is 103680, while the sum is 35.

Adding to 13643222345 its reverse (54322234631), we get a palindrome (67965456976).

The spelling of 13643222345 in words is "thirteen billion, six hundred forty-three million, two hundred twenty-two thousand, three hundred forty-five".