4543638651389 has 2 divisors, whose sum is σ = 4543638651390. Its totient is φ = 4543638651388.

The previous prime is 4543638651371. The next prime is 4543638651509. The reversal of 4543638651389 is 9831568363454.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4165803460900 + 377835190489 = 2041030^2 + 614683^2 .

It is a cyclic number.

It is not a de Polignac number, because 4543638651389 - 2³² = 4539343684093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4543638651319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2271819325694 + 2271819325695.

It is an arithmetic number, because the mean of its divisors is an integer number (2271819325695).

Almost surely, 2^{4543638651389} is an apocalyptic number.

It is an amenable number.

4543638651389 is a deficient number, since it is larger than the sum of its proper divisors (1).

4543638651389 is an equidigital number, since it uses as much as digits as its factorization.

4543638651389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 223948800, while the sum is 65.

The spelling of 4543638651389 in words is "four trillion, five hundred forty-three billion, six hundred thirty-eight million, six hundred fifty-one thousand, three hundred eighty-nine".