440161193873 has 2 divisors, whose sum is σ = 440161193874. Its totient is φ = 440161193872.

The previous prime is 440161193869. The next prime is 440161193893. The reversal of 440161193873 is 378391161044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 439878012289 + 283181584 = 663233^2 + 16828^2 .

It is a cyclic number.

It is not a de Polignac number, because 440161193873 - 2² = 440161193869 is a prime.

It is not a weakly prime, because it can be changed into another prime (440161193893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220080596936 + 220080596937.

It is an arithmetic number, because the mean of its divisors is an integer number (220080596937).

Almost surely, 2^440161193873 is an apocalyptic number.

It is an amenable number.

440161193873 is a deficient number, since it is larger than the sum of its proper divisors (1).

440161193873 is an equidigital number, since it uses as much as digits as its factorization.

440161193873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 440161193873 in words is "four hundred forty billion, one hundred sixty-one million, one hundred ninety-three thousand, eight hundred seventy-three".