84187864616 has 16 divisors (see below), whose sum is σ = 157857169140. Its totient is φ = 42092619520.

The previous prime is 84187864601. The next prime is 84187864619. The reversal of 84187864616 is 61646878148.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 78450408100 + 5737456516 = 280090^2 + 75746^2 .

It is not an unprimeable number, because it can be changed into a prime (84187864619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142046 + ... + 434226.

Almost surely, 2^84187864616 is an apocalyptic number.

It is an amenable number.

84187864616 is a deficient number, since it is larger than the sum of its proper divisors (73669304524).

84187864616 is a wasteful number, since it uses less digits than its factorization.

84187864616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328204 (or 328200 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 59.

The spelling of 84187864616 in words is "eighty-four billion, one hundred eighty-seven million, eight hundred sixty-four thousand, six hundred sixteen".