4345544321 has 8 divisors (see below), whose sum is σ = 4580512320. Its totient is φ = 4111201872.

The previous prime is 4345544299. The next prime is 4345544327. The reversal of 4345544321 is 1234455434.

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 4345544321 - 2²² = 4341350017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4345544327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142085 + ... + 169938.

It is an arithmetic number, because the mean of its divisors is an integer number (572564040).

Almost surely, 2^4345544321 is an apocalyptic number.

It is an amenable number.

4345544321 is a deficient number, since it is larger than the sum of its proper divisors (234967999).

4345544321 is a wasteful number, since it uses less digits than its factorization.

4345544321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312775.

The product of its digits is 115200, while the sum is 35.

The square root of 4345544321 is about 65920.7427218474. The cubic root of 4345544321 is about 1631.8543540377.

Adding to 4345544321 its reverse (1234455434), we get a palindrome (5579999755).

The spelling of 4345544321 in words is "four billion, three hundred forty-five million, five hundred forty-four thousand, three hundred twenty-one".