64220450443 has 2 divisors, whose sum is σ = 64220450444. Its totient is φ = 64220450442.

The previous prime is 64220450419. The next prime is 64220450453. The reversal of 64220450443 is 34405402246.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64220450443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64220450399 and 64220450408.

It is not a weakly prime, because it can be changed into another prime (64220450453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32110225221 + 32110225222.

It is an arithmetic number, because the mean of its divisors is an integer number (32110225222).

Almost surely, 2^64220450443 is an apocalyptic number.

64220450443 is a deficient number, since it is larger than the sum of its proper divisors (1).

64220450443 is an equidigital number, since it uses as much as digits as its factorization.

64220450443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 64220450443 its reverse (34405402246), we get a palindrome (98625852689).

The spelling of 64220450443 in words is "sixty-four billion, two hundred twenty million, four hundred fifty thousand, four hundred forty-three".