84857118909 has 8 divisors (see below), whose sum is σ = 113147074560. Its totient is φ = 56569287936.

The previous prime is 84857118901. The next prime is 84857118937. The reversal of 84857118909 is 90981175848.

It is a happy number.

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

It is not a de Polignac number, because 84857118909 - 2³ = 84857118901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84857118901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435517 + ... + 599490.

It is an arithmetic number, because the mean of its divisors is an integer number (14143384320).

Almost surely, 2^84857118909 is an apocalyptic number.

It is an amenable number.

84857118909 is a deficient number, since it is larger than the sum of its proper divisors (28289955651).

84857118909 is a wasteful number, since it uses less digits than its factorization.

84857118909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062339.

The product of its (nonzero) digits is 5806080, while the sum is 60.

The spelling of 84857118909 in words is "eighty-four billion, eight hundred fifty-seven million, one hundred eighteen thousand, nine hundred nine".