7024393918021 has 4 divisors (see below), whose sum is σ = 7055068127500. Its totient is φ = 6993719708544.

The previous prime is 7024393918001. The next prime is 7024393918033. The reversal of 7024393918021 is 1208193934207.

It is a happy number.

7024393918021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3860887027396 + 3163506890625 = 1964914^2 + 1778625^2 .

It is a de Polignac number, because none of the positive numbers 2^k-7024393918021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7024393918001) 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, 15337104396 + ... + 15337104853.

It is an arithmetic number, because the mean of its divisors is an integer number (1763767031875).

Almost surely, 2^{7024393918021} is an apocalyptic number.

It is an amenable number.

7024393918021 is a deficient number, since it is larger than the sum of its proper divisors (30674209479).

7024393918021 is a wasteful number, since it uses less digits than its factorization.

7024393918021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30674209478.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 7024393918021 in words is "seven trillion, twenty-four billion, three hundred ninety-three million, nine hundred eighteen thousand, twenty-one".