7104423635521 has 2 divisors, whose sum is σ = 7104423635522. Its totient is φ = 7104423635520.

The previous prime is 7104423635503. The next prime is 7104423635557. The reversal of 7104423635521 is 1255363244017.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6987484258225 + 116939377296 = 2643385^2 + 341964^2 .

It is an emirp because it is prime and its reverse (1255363244017) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7104423635521 - 2⁵ = 7104423635489 is a prime.

It is not a weakly prime, because it can be changed into another prime (7104423635921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3552211817760 + 3552211817761.

It is an arithmetic number, because the mean of its divisors is an integer number (3552211817761).

Almost surely, 2^{7104423635521} is an apocalyptic number.

It is an amenable number.

7104423635521 is a deficient number, since it is larger than the sum of its proper divisors (1).

7104423635521 is an equidigital number, since it uses as much as digits as its factorization.

7104423635521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 604800, while the sum is 43.

Adding to 7104423635521 its reverse (1255363244017), we get a palindrome (8359786879538).

The spelling of 7104423635521 in words is "seven trillion, one hundred four billion, four hundred twenty-three million, six hundred thirty-five thousand, five hundred twenty-one".