851805355200 has 168 divisors, whose sum is σ = 2941717581120. Its totient is φ = 215192908800.

The previous prime is 851805355199. The next prime is 851805355201. The reversal of 851805355200 is 2553508158.

It is an interprime number because it is at equal distance from previous prime (851805355199) and next prime (851805355201).

It is not an unprimeable number, because it can be changed into a prime (851805355201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4578786 + ... + 4761185.

Almost surely, 2^851805355200 is an apocalyptic number.

851805355200 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

851805355200 is an abundant number, since it is smaller than the sum of its proper divisors (2089912225920).

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

851805355200 is a wasteful number, since it uses less digits than its factorization.

851805355200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9340015 (or 9340000 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 42.

The spelling of 851805355200 in words is "eight hundred fifty-one billion, eight hundred five million, three hundred fifty-five thousand, two hundred".