853158055820 has 96 divisors (see below), whose sum is σ = 2091522263040. Its totient is φ = 286236023040.

The previous prime is 853158055801. The next prime is 853158055823. The reversal of 853158055820 is 28550851358.

853158055820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31 ways as a sum of consecutive naturals, for example, 59285186 + ... + 59299574.

It is an arithmetic number, because the mean of its divisors is an integer number (21786690240).

Almost surely, 2^853158055820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 853158055820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1045761131520).

853158055820 is an abundant number, since it is smaller than the sum of its proper divisors (1238364207220).

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

853158055820 is a wasteful number, since it uses less digits than its factorization.

853158055820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23463 (or 23461 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 50.

The spelling of 853158055820 in words is "eight hundred fifty-three billion, one hundred fifty-eight million, fifty-five thousand, eight hundred twenty".