84105003820 has 48 divisors (see below), whose sum is σ = 179456715648. Its totient is φ = 33103918080.

The previous prime is 84105003713. The next prime is 84105003821. The reversal of 84105003820 is 2830050148.

It is not an unprimeable number, because it can be changed into a prime (84105003821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 562432 + ... + 696088.

It is an arithmetic number, because the mean of its divisors is an integer number (3738681576).

Almost surely, 2^84105003820 is an apocalyptic number.

It is an amenable number.

84105003820 is an abundant number, since it is smaller than the sum of its proper divisors (95351711828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84105003820 is a wasteful number, since it uses less digits than its factorization.

84105003820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134170 (or 134168 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

Adding to 84105003820 its reverse (2830050148), we get a palindrome (86935053968).

The spelling of 84105003820 in words is "eighty-four billion, one hundred five million, three thousand, eight hundred twenty".