855028240000 has 320 divisors, whose sum is σ = 2328794297280. Its totient is φ = 310016000000.

The previous prime is 855028239943. The next prime is 855028240007. The reversal of 855028240000 is 42820558.

It is a tau number, because it is divible by the number of its divisors (320).

It is not an unprimeable number, because it can be changed into a prime (855028240007) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 352878789 + ... + 352881211.

It is an arithmetic number, because the mean of its divisors is an integer number (7277482179).

Almost surely, 2^855028240000 is an apocalyptic number.

855028240000 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 855028240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1164397148640).

855028240000 is an abundant number, since it is smaller than the sum of its proper divisors (1473766057280).

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

855028240000 is a wasteful number, since it uses less digits than its factorization.

855028240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2869 (or 2842 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 34.

The spelling of 855028240000 in words is "eight hundred fifty-five billion, twenty-eight million, two hundred forty thousand".