4651543321 has 2 divisors, whose sum is σ = 4651543322. Its totient is φ = 4651543320.

The previous prime is 4651543307. The next prime is 4651543333. The reversal of 4651543321 is 1233451564.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2955009600 + 1696533721 = 54360^2 + 41189^2 .

It is a cyclic number.

It is not a de Polignac number, because 4651543321 - 2⁵ = 4651543289 is a prime.

It is not a weakly prime, because it can be changed into another prime (4651543301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2325771660 + 2325771661.

It is an arithmetic number, because the mean of its divisors is an integer number (2325771661).

Almost surely, 2^4651543321 is an apocalyptic number.

It is an amenable number.

4651543321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4651543321 is an equidigital number, since it uses as much as digits as its factorization.

4651543321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 34.

The square root of 4651543321 is about 68202.2237247438. The cubic root of 4651543321 is about 1669.2921714940.

Adding to 4651543321 its reverse (1233451564), we get a palindrome (5884994885).

The spelling of 4651543321 in words is "four billion, six hundred fifty-one million, five hundred forty-three thousand, three hundred twenty-one".