84463342821 has 48 divisors (see below), whose sum is σ = 144751082112. Its totient is φ = 46784304000.

The previous prime is 84463342811. The next prime is 84463342889. The reversal of 84463342821 is 12824336448.

It is a happy number.

84463342821 is a `hidden beast` number, since 8 + 4 + 4 + 633 + 4 + 2 + 8 + 2 + 1 = 666.

It is not a de Polignac number, because 84463342821 - 2⁹ = 84463342309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84463342811) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 194905 + ... + 454878.

It is an arithmetic number, because the mean of its divisors is an integer number (3015647544).

Almost surely, 2^84463342821 is an apocalyptic number.

It is an amenable number.

84463342821 is a deficient number, since it is larger than the sum of its proper divisors (60287739291).

84463342821 is a wasteful number, since it uses less digits than its factorization.

84463342821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649914 (or 649911 counting only the distinct ones).

The product of its digits is 884736, while the sum is 45.

The spelling of 84463342821 in words is "eighty-four billion, four hundred sixty-three million, three hundred forty-two thousand, eight hundred twenty-one".