128414005946449 has 2 divisors, whose sum is σ = 128414005946450. Its totient is φ = 128414005946448.

The previous prime is 128414005946381. The next prime is 128414005946521. The reversal of 128414005946449 is 944649500414821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125087850695824 + 3326155250625 = 11184268^2 + 1823775^2 .

It is a cyclic number.

It is not a de Polignac number, because 128414005946449 - 2¹⁵ = 128414005913681 is a prime.

It is not a weakly prime, because it can be changed into another prime (128414005746449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64207002973224 + 64207002973225.

It is an arithmetic number, because the mean of its divisors is an integer number (64207002973225).

Almost surely, 2^{128414005946449} is an apocalyptic number.

It is an amenable number.

128414005946449 is a deficient number, since it is larger than the sum of its proper divisors (1).

128414005946449 is an equidigital number, since it uses as much as digits as its factorization.

128414005946449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39813120, while the sum is 61.

The spelling of 128414005946449 in words is "one hundred twenty-eight trillion, four hundred fourteen billion, five million, nine hundred forty-six thousand, four hundred forty-nine".