84128266618 has 8 divisors (see below), whose sum is σ = 137664436320. Its totient is φ = 38240121180.

The previous prime is 84128266613. The next prime is 84128266667. The reversal of 84128266618 is 81666282148.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (84128266613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1912006038 + ... + 1912006081.

It is an arithmetic number, because the mean of its divisors is an integer number (17208054540).

Almost surely, 2^84128266618 is an apocalyptic number.

84128266618 is a deficient number, since it is larger than the sum of its proper divisors (53536169702).

84128266618 is a wasteful number, since it uses less digits than its factorization.

84128266618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3824012132.

The product of its digits is 1769472, while the sum is 52.

The spelling of 84128266618 in words is "eighty-four billion, one hundred twenty-eight million, two hundred sixty-six thousand, six hundred eighteen".