3645321111211 has 8 divisors (see below), whose sum is σ = 3947661884880. Its totient is φ = 3346113402912.

The previous prime is 3645321111203. The next prime is 3645321111371. The reversal of 3645321111211 is 1121111235463.

It is a happy number.

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 3645321111211 - 2³ = 3645321111203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3645324111211) 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, 783263920 + ... + 783268573.

It is an arithmetic number, because the mean of its divisors is an integer number (493457735610).

Almost surely, 2^{3645321111211} is an apocalyptic number.

3645321111211 is a deficient number, since it is larger than the sum of its proper divisors (302340773669).

3645321111211 is a wasteful number, since it uses less digits than its factorization.

3645321111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566532685.

The product of its digits is 4320, while the sum is 31.

Adding to 3645321111211 its reverse (1121111235463), we get a palindrome (4766432346674).

The spelling of 3645321111211 in words is "three trillion, six hundred forty-five billion, three hundred twenty-one million, one hundred eleven thousand, two hundred eleven".