2240043443521 has 8 divisors (see below), whose sum is σ = 2414126983464. Its totient is φ = 2066213118720.

The previous prime is 2240043443447. The next prime is 2240043443537. The reversal of 2240043443521 is 1253443400422.

It can be written as a sum of positive squares in 4 ways, for example, as 29424599296 + 2210618844225 = 171536^2 + 1486815^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2240043443521 - 2²³ = 2240035054913 is a prime.

It is a super-2 number, since 2×2240043443521² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2240043443591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63285406 + ... + 63320791.

It is an arithmetic number, because the mean of its divisors is an integer number (301765872933).

Almost surely, 2^{2240043443521} is an apocalyptic number.

It is an amenable number.

2240043443521 is a deficient number, since it is larger than the sum of its proper divisors (174083539943).

2240043443521 is a wasteful number, since it uses less digits than its factorization.

2240043443521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126607571.

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 2240043443521 its reverse (1253443400422), we get a palindrome (3493486843943).

The spelling of 2240043443521 in words is "two trillion, two hundred forty billion, forty-three million, four hundred forty-three thousand, five hundred twenty-one".