7115168615021 has 2 divisors, whose sum is σ = 7115168615022. Its totient is φ = 7115168615020.

The previous prime is 7115168615017. The next prime is 7115168615041. The reversal of 7115168615021 is 1205168615117.

7115168615021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7112622302500 + 2546312521 = 2666950^2 + 50461^2 .

It is a cyclic number.

It is not a de Polignac number, because 7115168615021 - 2² = 7115168615017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7115168615041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3557584307510 + 3557584307511.

It is an arithmetic number, because the mean of its divisors is an integer number (3557584307511).

Almost surely, 2^{7115168615021} is an apocalyptic number.

It is an amenable number.

7115168615021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7115168615021 is an equidigital number, since it uses as much as digits as its factorization.

7115168615021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 44.

The spelling of 7115168615021 in words is "seven trillion, one hundred fifteen billion, one hundred sixty-eight million, six hundred fifteen thousand, twenty-one".