2444117561 has 16 divisors (see below), whose sum is σ = 2527516800. Its totient is φ = 2362348800.

The previous prime is 2444117537. The next prime is 2444117569. The reversal of 2444117561 is 1657114442.

It is a cyclic number.

It is not a de Polignac number, because 2444117561 - 2²² = 2439923257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2444117569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1640705 + ... + 1642193.

It is an arithmetic number, because the mean of its divisors is an integer number (157969800).

Almost surely, 2^2444117561 is an apocalyptic number.

It is an amenable number.

2444117561 is a deficient number, since it is larger than the sum of its proper divisors (83399239).

2444117561 is a wasteful number, since it uses less digits than its factorization.

2444117561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000.

The product of its digits is 26880, while the sum is 35.

The square root of 2444117561 is about 49438.0173651816. The cubic root of 2444117561 is about 1347.0199580856.

The spelling of 2444117561 in words is "two billion, four hundred forty-four million, one hundred seventeen thousand, five hundred sixty-one".