7443358821 has 12 divisors (see below), whose sum is σ = 10752348672. Its totient is φ = 4961855976.

The previous prime is 7443358801. The next prime is 7443358843. The reversal of 7443358821 is 1288533447.

7443358821 is a `hidden beast` number, since 7 + 4 + 43 + 3 + 588 + 21 = 666.

It is not a de Polignac number, because 7443358821 - 2⁵ = 7443358789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7443358801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139510 + ... + 185336.

It is an arithmetic number, because the mean of its divisors is an integer number (896029056).

Almost surely, 2^7443358821 is an apocalyptic number.

It is an amenable number.

7443358821 is a deficient number, since it is larger than the sum of its proper divisors (3308989851).

7443358821 is a wasteful number, since it uses less digits than its factorization.

7443358821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63880 (or 63877 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 7443358821 is about 86274.9026136802. The cubic root of 7443358821 is about 1952.4937475912.

The spelling of 7443358821 in words is "seven billion, four hundred forty-three million, three hundred fifty-eight thousand, eight hundred twenty-one".