855181272000 has 448 divisors, whose sum is σ = 3084243402240. Its totient is φ = 207066112000.

The previous prime is 855181271963. The next prime is 855181272041. The reversal of 855181272000 is 272181558.

It is a self number, because there is not a number n which added to its sum of digits gives 855181272000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 313366636 + ... + 313369364.

It is an arithmetic number, because the mean of its divisors is an integer number (6884471880).

Almost surely, 2^855181272000 is an apocalyptic number.

855181272000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855181272000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1542121701120).

855181272000 is an abundant number, since it is smaller than the sum of its proper divisors (2229062130240).

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

855181272000 is a wasteful number, since it uses less digits than its factorization.

855181272000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957 (or 3937 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 39.

The spelling of 855181272000 in words is "eight hundred fifty-five billion, one hundred eighty-one million, two hundred seventy-two thousand".