5816828021891 has 2 divisors, whose sum is σ = 5816828021892. Its totient is φ = 5816828021890.

The previous prime is 5816828021867. The next prime is 5816828021897. The reversal of 5816828021891 is 1981208286185.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5816828021891 - 2²⁶ = 5816760913027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5816828021891.

It is not a weakly prime, because it can be changed into another prime (5816828021897) 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 as a sum of consecutive naturals, namely, 2908414010945 + 2908414010946.

It is an arithmetic number, because the mean of its divisors is an integer number (2908414010946).

Almost surely, 2^{5816828021891} is an apocalyptic number.

5816828021891 is a deficient number, since it is larger than the sum of its proper divisors (1).

5816828021891 is an equidigital number, since it uses as much as digits as its factorization.

5816828021891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4423680, while the sum is 59.

The spelling of 5816828021891 in words is "five trillion, eight hundred sixteen billion, eight hundred twenty-eight million, twenty-one thousand, eight hundred ninety-one".