855638016000 has 448 divisors, whose sum is σ = 3015067030560. Its totient is φ = 214748364800.

The previous prime is 855638015933. The next prime is 855638016041. The reversal of 855638016000 is 610836558.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50331647992 + ... + 50331648008.

Almost surely, 2^855638016000 is an apocalyptic number.

855638016000 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 855638016000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1507533515280).

855638016000 is an abundant number, since it is smaller than the sum of its proper divisors (2159429014560).

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

855638016000 is an frugal number, since it uses more digits than its factorization.

855638016000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 855638016000 in words is "eight hundred fifty-five billion, six hundred thirty-eight million, sixteen thousand".