850506109020 has 576 divisors, whose sum is σ = 2800976855040. Its totient is φ = 216467603712.

The previous prime is 850506109009. The next prime is 850506109087. The reversal of 850506109020 is 20901605058.

It is a happy number.

850506109020 is a `hidden beast` number, since 8 + 50 + 506 + 10 + 90 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3005321799 + ... + 3005322081.

It is an arithmetic number, because the mean of its divisors is an integer number (4862807040).

Almost surely, 2^850506109020 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 850506109020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1400488427520).

850506109020 is an abundant number, since it is smaller than the sum of its proper divisors (1950470746020).

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

850506109020 is a wasteful number, since it uses less digits than its factorization.

850506109020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 622 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 850506109020 in words is "eight hundred fifty billion, five hundred six million, one hundred nine thousand, twenty".