244405002161 has 6 divisors (see below), whose sum is σ = 259627459350. Its totient is φ = 230028237056.

The previous prime is 244405002113. The next prime is 244405002181. The reversal of 244405002161 is 161200504442.

It can be written as a sum of positive squares in 3 ways, for example, as 140385851761 + 104019150400 = 374681^2 + 322520^2 .

It is a de Polignac number, because none of the positive numbers 2^k-244405002161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244405002181) 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 in 5 ways as a sum of consecutive naturals, for example, 422845736 + ... + 422846313.

It is an arithmetic number, because the mean of its divisors is an integer number (43271243225).

Almost surely, 2^244405002161 is an apocalyptic number.

It is an amenable number.

244405002161 is a deficient number, since it is larger than the sum of its proper divisors (15222457189).

244405002161 is an equidigital number, since it uses as much as digits as its factorization.

244405002161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845692083 (or 845692066 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The spelling of 244405002161 in words is "two hundred forty-four billion, four hundred five million, two thousand, one hundred sixty-one".