855209941488 has 270 divisors, whose sum is σ = 2938415036544. Its totient is φ = 231484708224.

The previous prime is 855209941483. The next prime is 855209941493. The reversal of 855209941488 is 884149902558.

855209941488 is a `hidden beast` number, since 8 + 5 + 5 + 20 + 99 + 41 + 488 = 666.

It is an interprime number because it is at equal distance from previous prime (855209941483) and next prime (855209941493).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855209941483) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 2379345 + ... + 2715087.

Almost surely, 2^855209941488 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 855209941488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1469207518272).

855209941488 is an abundant number, since it is smaller than the sum of its proper divisors (2083205095056).

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

855209941488 is a wasteful number, since it uses less digits than its factorization.

855209941488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335809 (or 335774 counting only the distinct ones).

The product of its (nonzero) digits is 33177600, while the sum is 63.

The spelling of 855209941488 in words is "eight hundred fifty-five billion, two hundred nine million, nine hundred forty-one thousand, four hundred eighty-eight".