84646421375 has 16 divisors (see below), whose sum is σ = 106573607712. Its totient is φ = 67117859200.

The previous prime is 84646421359. The next prime is 84646421399. The reversal of 84646421375 is 57312464648.

It is not a de Polignac number, because 84646421375 - 2⁴ = 84646421359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2982209 + ... + 3010458.

It is an arithmetic number, because the mean of its divisors is an integer number (6660850482).

Almost surely, 2^84646421375 is an apocalyptic number.

84646421375 is a deficient number, since it is larger than the sum of its proper divisors (21927186337).

84646421375 is a wasteful number, since it uses less digits than its factorization.

84646421375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5992795 (or 5992785 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 50.

The spelling of 84646421375 in words is "eighty-four billion, six hundred forty-six million, four hundred twenty-one thousand, three hundred seventy-five".