4424243744561 has 4 divisors (see below), whose sum is σ = 4684493376612. Its totient is φ = 4163994112512.

The previous prime is 4424243744539. The next prime is 4424243744573. The reversal of 4424243744561 is 1654473424244.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3056794160161 + 1367449584400 = 1748369^2 + 1169380^2 .

It is a cyclic number.

It is not a de Polignac number, because 4424243744561 - 2³⁰ = 4423170002737 is a prime.

It is a super-2 number, since 2×4424243744561² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4424243744521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130124816000 + ... + 130124816033.

It is an arithmetic number, because the mean of its divisors is an integer number (1171123344153).

Almost surely, 2^{4424243744561} is an apocalyptic number.

It is an amenable number.

4424243744561 is a deficient number, since it is larger than the sum of its proper divisors (260249632051).

4424243744561 is a wasteful number, since it uses less digits than its factorization.

4424243744561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260249632050.

The product of its digits is 10321920, while the sum is 50.

The spelling of 4424243744561 in words is "four trillion, four hundred twenty-four billion, two hundred forty-three million, seven hundred forty-four thousand, five hundred sixty-one".