211047840618 has 8 divisors (see below), whose sum is σ = 422095681248. Its totient is φ = 70349280204.

The previous prime is 211047840613. The next prime is 211047840659. The reversal of 211047840618 is 816048740112.

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

211047840618 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 211047840618.

It is not an unprimeable number, because it can be changed into a prime (211047840613) 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, 17587320046 + ... + 17587320057.

It is an arithmetic number, because the mean of its divisors is an integer number (52761960156).

Almost surely, 2^211047840618 is an apocalyptic number.

211047840618 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

211047840618 is a wasteful number, since it uses less digits than its factorization.

211047840618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35174640108.

The product of its (nonzero) digits is 86016, while the sum is 42.

The spelling of 211047840618 in words is "two hundred eleven billion, forty-seven million, eight hundred forty thousand, six hundred eighteen".