855275511100 has 72 divisors (see below), whose sum is σ = 1896245507520. Its totient is φ = 334688286720.

The previous prime is 855275511091. The next prime is 855275511107. The reversal of 855275511100 is 1115572558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855275511107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11322256 + ... + 11397544.

It is an arithmetic number, because the mean of its divisors is an integer number (26336743160).

Almost surely, 2^855275511100 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 855275511100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (948122753760).

855275511100 is an abundant number, since it is smaller than the sum of its proper divisors (1040969996420).

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

855275511100 is a wasteful number, since it uses less digits than its factorization.

855275511100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77767 (or 77760 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 40.

The spelling of 855275511100 in words is "eight hundred fifty-five billion, two hundred seventy-five million, five hundred eleven thousand, one hundred".