6821128458119 has 2 divisors, whose sum is σ = 6821128458120. Its totient is φ = 6821128458118.

The previous prime is 6821128458091. The next prime is 6821128458161. The reversal of 6821128458119 is 9118548211286.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6821128458119 - 2³² = 6816833490823 is a prime.

It is a super-2 number, since 2×6821128458119² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6821128458019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3410564229059 + 3410564229060.

It is an arithmetic number, because the mean of its divisors is an integer number (3410564229060).

Almost surely, 2^{6821128458119} is an apocalyptic number.

6821128458119 is a deficient number, since it is larger than the sum of its proper divisors (1).

6821128458119 is an equidigital number, since it uses as much as digits as its factorization.

6821128458119 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2211840, while the sum is 56.

The spelling of 6821128458119 in words is "six trillion, eight hundred twenty-one billion, one hundred twenty-eight million, four hundred fifty-eight thousand, one hundred nineteen".