128616443 has 2 divisors, whose sum is σ = 128616444. Its totient is φ = 128616442.

The previous prime is 128616419. The next prime is 128616451. The reversal of 128616443 is 344616821.

It is a strong prime.

It is an emirp because it is prime and its reverse (344616821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128616443 - 2¹⁶ = 128550907 is a prime.

It is not a weakly prime, because it can be changed into another prime (128616463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64308221 + 64308222.

It is an arithmetic number, because the mean of its divisors is an integer number (64308222).

Almost surely, 2^128616443 is an apocalyptic number.

128616443 is a deficient number, since it is larger than the sum of its proper divisors (1).

128616443 is an equidigital number, since it uses as much as digits as its factorization.

128616443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 35.

The square root of 128616443 is about 11340.9189662919. The cubic root of 128616443 is about 504.7761554096.

The spelling of 128616443 in words is "one hundred twenty-eight million, six hundred sixteen thousand, four hundred forty-three".