7047633440021 has 2 divisors, whose sum is σ = 7047633440022. Its totient is φ = 7047633440020.

The previous prime is 7047633440009. The next prime is 7047633440039. The reversal of 7047633440021 is 1200443367407.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4225532472100 + 2822100967921 = 2055610^2 + 1679911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7047633440021 is a prime.

It is a super-3 number, since 3×7047633440021³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7047633440041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3523816720010 + 3523816720011.

It is an arithmetic number, because the mean of its divisors is an integer number (3523816720011).

Almost surely, 2^{7047633440021} is an apocalyptic number.

It is an amenable number.

7047633440021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7047633440021 is an equidigital number, since it uses as much as digits as its factorization.

7047633440021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 41.

The spelling of 7047633440021 in words is "seven trillion, forty-seven billion, six hundred thirty-three million, four hundred forty thousand, twenty-one".