7340043044521 has 32 divisors (see below), whose sum is σ = 8647452400896. Its totient is φ = 6156003840000.

The previous prime is 7340043044497. The next prime is 7340043044531. The reversal of 7340043044521 is 1254403400437.

It is a cyclic number.

It is not a de Polignac number, because 7340043044521 - 2¹⁹ = 7340042520233 is a prime.

It is a super-2 number, since 2×7340043044521² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7340043044531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 699121 + ... + 3894721.

It is an arithmetic number, because the mean of its divisors is an integer number (270232887528).

Almost surely, 2^{7340043044521} is an apocalyptic number.

7340043044521 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7340043044521 is a deficient number, since it is larger than the sum of its proper divisors (1307409356375).

7340043044521 is a wasteful number, since it uses less digits than its factorization.

7340043044521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3195873.

The product of its (nonzero) digits is 161280, while the sum is 37.

Adding to 7340043044521 its reverse (1254403400437), we get a palindrome (8594446444958).

The spelling of 7340043044521 in words is "seven trillion, three hundred forty billion, forty-three million, forty-four thousand, five hundred twenty-one".