853158055821 has 8 divisors (see below), whose sum is σ = 1168288509024. Its totient is φ = 553399819920.

The previous prime is 853158055801. The next prime is 853158055823. The reversal of 853158055821 is 128550851358.

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

It is not a de Polignac number, because 853158055821 - 2²⁵ = 853124501389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853158055823) 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, 3843054195 + ... + 3843054416.

It is an arithmetic number, because the mean of its divisors is an integer number (146036063628).

Almost surely, 2^853158055821 is an apocalyptic number.

It is an amenable number.

853158055821 is a deficient number, since it is larger than the sum of its proper divisors (315130453203).

853158055821 is a wasteful number, since it uses less digits than its factorization.

853158055821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7686108651.

The product of its (nonzero) digits is 1920000, while the sum is 51.

The spelling of 853158055821 in words is "eight hundred fifty-three billion, one hundred fifty-eight million, fifty-five thousand, eight hundred twenty-one".