6821128458143 has 8 divisors (see below), whose sum is σ = 7222574728512. Its totient is φ = 6419704790016.

The previous prime is 6821128458119. The next prime is 6821128458161. The reversal of 6821128458143 is 3418548211286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6821128458143 - 2¹² = 6821128454047 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 (6821128454143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5027255 + ... + 6238232.

It is an arithmetic number, because the mean of its divisors is an integer number (902821841064).

Almost surely, 2^{6821128458143} is an apocalyptic number.

6821128458143 is a deficient number, since it is larger than the sum of its proper divisors (401446270369).

6821128458143 is a wasteful number, since it uses less digits than its factorization.

6821128458143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11301121.

The product of its digits is 2949120, while the sum is 53.

The spelling of 6821128458143 in words is "six trillion, eight hundred twenty-one billion, one hundred twenty-eight million, four hundred fifty-eight thousand, one hundred forty-three".