64222116389 has 2 divisors, whose sum is σ = 64222116390. Its totient is φ = 64222116388.

The previous prime is 64222116347. The next prime is 64222116419. The reversal of 64222116389 is 98361122246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54135328900 + 10086787489 = 232670^2 + 100433^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64222116389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64222116589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32111058194 + 32111058195.

It is an arithmetic number, because the mean of its divisors is an integer number (32111058195).

Almost surely, 2^64222116389 is an apocalyptic number.

It is an amenable number.

64222116389 is a deficient number, since it is larger than the sum of its proper divisors (1).

64222116389 is an equidigital number, since it uses as much as digits as its factorization.

64222116389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 44.

The spelling of 64222116389 in words is "sixty-four billion, two hundred twenty-two million, one hundred sixteen thousand, three hundred eighty-nine".