855341863992 has 384 divisors, whose sum is σ = 3112394803200. Its totient is φ = 214999142400.

The previous prime is 855341863991. The next prime is 855341864021. The reversal of 855341863992 is 299368143558.

855341863992 is a `hidden beast` number, since 8 + 5 + 534 + 1 + 8 + 6 + 3 + 9 + 92 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855341863991) 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 95 ways as a sum of consecutive naturals, for example, 3490648 + ... + 3727640.

It is an arithmetic number, because the mean of its divisors is an integer number (8105194800).

Almost surely, 2^855341863992 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 855341863992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1556197401600).

855341863992 is an abundant number, since it is smaller than the sum of its proper divisors (2257052939208).

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

855341863992 is a wasteful number, since it uses less digits than its factorization.

855341863992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237064 (or 237047 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 63.

The spelling of 855341863992 in words is "eight hundred fifty-five billion, three hundred forty-one million, eight hundred sixty-three thousand, nine hundred ninety-two".