4545116321 has 8 divisors (see below), whose sum is σ = 4722031080. Its totient is φ = 4369547392.

The previous prime is 4545116299. The next prime is 4545116339. The reversal of 4545116321 is 1236115454.

It can be written as a sum of positive squares in 4 ways, for example, as 52765696 + 4492350625 = 7264^2 + 67025^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-4545116321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4545116221) 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, 329570 + ... + 343083.

It is an arithmetic number, because the mean of its divisors is an integer number (590253885).

Almost surely, 2^4545116321 is an apocalyptic number.

It is an amenable number.

4545116321 is a deficient number, since it is larger than the sum of its proper divisors (176914759).

4545116321 is a wasteful number, since it uses less digits than its factorization.

4545116321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672915.

The product of its digits is 14400, while the sum is 32.

The square root of 4545116321 is about 67417.4778599734. The cubic root of 4545116321 is about 1656.4627248668.

The spelling of 4545116321 in words is "four billion, five hundred forty-five million, one hundred sixteen thousand, three hundred twenty-one".