84646421359 has 2 divisors, whose sum is σ = 84646421360. Its totient is φ = 84646421358.

The previous prime is 84646421323. The next prime is 84646421399. The reversal of 84646421359 is 95312464648.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84646421359 - 2⁹ = 84646420847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84646421399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42323210679 + 42323210680.

It is an arithmetic number, because the mean of its divisors is an integer number (42323210680).

Almost surely, 2^84646421359 is an apocalyptic number.

84646421359 is a deficient number, since it is larger than the sum of its proper divisors (1).

84646421359 is an equidigital number, since it uses as much as digits as its factorization.

84646421359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 52.

The spelling of 84646421359 in words is "eighty-four billion, six hundred forty-six million, four hundred twenty-one thousand, three hundred fifty-nine".