4405982081689 has 2 divisors, whose sum is σ = 4405982081690. Its totient is φ = 4405982081688.

The previous prime is 4405982081663. The next prime is 4405982081693. The reversal of 4405982081689 is 9861802895044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2365084121689 + 2040897960000 = 1537883^2 + 1428600^2 .

It is a cyclic number.

It is not a de Polignac number, because 4405982081689 - 2⁷ = 4405982081561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4405982081689.

It is not a weakly prime, because it can be changed into another prime (4405982081629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2202991040844 + 2202991040845.

It is an arithmetic number, because the mean of its divisors is an integer number (2202991040845).

Almost surely, 2^{4405982081689} is an apocalyptic number.

It is an amenable number.

4405982081689 is a deficient number, since it is larger than the sum of its proper divisors (1).

4405982081689 is an equidigital number, since it uses as much as digits as its factorization.

4405982081689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39813120, while the sum is 64.

The spelling of 4405982081689 in words is "four trillion, four hundred five billion, nine hundred eighty-two million, eighty-one thousand, six hundred eighty-nine".