84443919618 has 32 divisors (see below), whose sum is σ = 185506099200. Its totient is φ = 25507087056.

The previous prime is 84443919601. The next prime is 84443919629. The reversal of 84443919618 is 81691934448.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16100338 + ... + 16105581.

It is an arithmetic number, because the mean of its divisors is an integer number (5797065600).

Almost surely, 2^84443919618 is an apocalyptic number.

84443919618 is an abundant number, since it is smaller than the sum of its proper divisors (101062179582).

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

84443919618 is a wasteful number, since it uses less digits than its factorization.

84443919618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32205966.

The product of its digits is 5971968, while the sum is 57.

The spelling of 84443919618 in words is "eighty-four billion, four hundred forty-three million, nine hundred nineteen thousand, six hundred eighteen".