84041973021 has 16 divisors (see below), whose sum is σ = 118133414784. Its totient is φ = 53039483904.

The previous prime is 84041973017. The next prime is 84041973023. The reversal of 84041973021 is 12037914048.

It is not a de Polignac number, because 84041973021 - 2² = 84041973017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84041973023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6271656 + ... + 6285041.

It is an arithmetic number, because the mean of its divisors is an integer number (7383338424).

Almost surely, 2^84041973021 is an apocalyptic number.

It is an amenable number.

84041973021 is a deficient number, since it is larger than the sum of its proper divisors (34091441763).

84041973021 is a wasteful number, since it uses less digits than its factorization.

84041973021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12556820.

The product of its (nonzero) digits is 48384, while the sum is 39.

The spelling of 84041973021 in words is "eighty-four billion, forty-one million, nine hundred seventy-three thousand, twenty-one".