999953670536618 has 32 divisors (see below), whose sum is σ = 1723097606442240. Its totient is φ = 426328768834560.

The previous prime is 999953670536549. The next prime is 999953670536663. The reversal of 999953670536618 is 816635076359999.

It is a self number, because there is not a number n which added to its sum of digits gives 999953670536618.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 548842163 + ... + 550661081.

It is an arithmetic number, because the mean of its divisors is an integer number (53846800201320).

Almost surely, 2^{999953670536618} is an apocalyptic number.

999953670536618 is a deficient number, since it is larger than the sum of its proper divisors (723143935905622).

999953670536618 is a wasteful number, since it uses less digits than its factorization.

999953670536618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022582.

The product of its (nonzero) digits is 17856417600, while the sum is 86.

The spelling of 999953670536618 in words is "nine hundred ninety-nine trillion, nine hundred fifty-three billion, six hundred seventy million, five hundred thirty-six thousand, six hundred eighteen".