855165289504 has 96 divisors (see below), whose sum is σ = 1748450200896. Its totient is φ = 411398507520.

The previous prime is 855165289501. The next prime is 855165289507. The reversal of 855165289504 is 405982561558.

It is an interprime number because it is at equal distance from previous prime (855165289501) and next prime (855165289507).

It is not an unprimeable number, because it can be changed into a prime (855165289501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39211467 + ... + 39233269.

It is an arithmetic number, because the mean of its divisors is an integer number (18213022926).

Almost surely, 2^855165289504 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 855165289504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (874225100448).

855165289504 is an abundant number, since it is smaller than the sum of its proper divisors (893284911392).

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

855165289504 is a wasteful number, since it uses less digits than its factorization.

855165289504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22218 (or 22210 counting only the distinct ones).

The product of its (nonzero) digits is 17280000, while the sum is 58.

The spelling of 855165289504 in words is "eight hundred fifty-five billion, one hundred sixty-five million, two hundred eighty-nine thousand, five hundred four".