855181312 has 48 divisors (see below), whose sum is σ = 1718917200. Its totient is φ = 425349120.

The previous prime is 855181303. The next prime is 855181337. The reversal of 855181312 is 213181558.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431139 + ... + 433117.

It is an arithmetic number, because the mean of its divisors is an integer number (35810775).

Almost surely, 2^855181312 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 855181312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (859458600).

855181312 is an abundant number, since it is smaller than the sum of its proper divisors (863735888).

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

855181312 is a wasteful number, since it uses less digits than its factorization.

855181312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212 (or 2192 counting only the distinct ones).

The product of its digits is 9600, while the sum is 34.

The square root of 855181312 is about 29243.4832398605. The cubic root of 855181312 is about 949.1890815902.

The spelling of 855181312 in words is "eight hundred fifty-five million, one hundred eighty-one thousand, three hundred twelve".