84884766021 has 16 divisors (see below), whose sum is σ = 137187501120. Its totient is φ = 51445312560.

The previous prime is 84884765983. The next prime is 84884766041. The reversal of 84884766021 is 12066748848.

It is not a de Polignac number, because 84884766021 - 2⁹ = 84884765509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84884766041) 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, 142903350 + ... + 142903943.

It is an arithmetic number, because the mean of its divisors is an integer number (8574218820).

Almost surely, 2^84884766021 is an apocalyptic number.

It is an amenable number.

84884766021 is a deficient number, since it is larger than the sum of its proper divisors (52302735099).

84884766021 is a wasteful number, since it uses less digits than its factorization.

84884766021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285807313 (or 285807307 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 84884766021 in words is "eighty-four billion, eight hundred eighty-four million, seven hundred sixty-six thousand, twenty-one".