440561941873 has 2 divisors, whose sum is σ = 440561941874. Its totient is φ = 440561941872.

The previous prime is 440561941843. The next prime is 440561941889. The reversal of 440561941873 is 378149165044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 428019509824 + 12542432049 = 654232^2 + 111993^2 .

It is a cyclic number.

It is not a de Polignac number, because 440561941873 - 2⁹ = 440561941361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440561941873.

It is not a weakly prime, because it can be changed into another prime (440561941843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220280970936 + 220280970937.

It is an arithmetic number, because the mean of its divisors is an integer number (220280970937).

Almost surely, 2^440561941873 is an apocalyptic number.

It is an amenable number.

440561941873 is a deficient number, since it is larger than the sum of its proper divisors (1).

440561941873 is an equidigital number, since it uses as much as digits as its factorization.

440561941873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 440561941873 in words is "four hundred forty billion, five hundred sixty-one million, nine hundred forty-one thousand, eight hundred seventy-three".