84765215816 has 16 divisors (see below), whose sum is σ = 158937901440. Its totient is φ = 42381775440.

The previous prime is 84765215803. The next prime is 84765215819. The reversal of 84765215816 is 61851256748.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (84765215819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650801 + ... + 770111.

It is an arithmetic number, because the mean of its divisors is an integer number (9933618840).

Almost surely, 2^84765215816 is an apocalyptic number.

It is an amenable number.

84765215816 is a deficient number, since it is larger than the sum of its proper divisors (74172685624).

84765215816 is a wasteful number, since it uses less digits than its factorization.

84765215816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208124 (or 208120 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 53.

The spelling of 84765215816 in words is "eighty-four billion, seven hundred sixty-five million, two hundred fifteen thousand, eight hundred sixteen".