851155120 has 20 divisors (see below), whose sum is σ = 1978935840. Its totient is φ = 340462016.

The previous prime is 851155111. The next prime is 851155157. The reversal of 851155120 is 21551158.

851155120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5319640 + ... + 5319799.

It is an arithmetic number, because the mean of its divisors is an integer number (98946792).

Almost surely, 2^851155120 is an apocalyptic number.

851155120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

851155120 is an abundant number, since it is smaller than the sum of its proper divisors (1127780720).

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

851155120 is a wasteful number, since it uses less digits than its factorization.

851155120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10639452 (or 10639446 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 28.

The square root of 851155120 is about 29174.5628930409. The cubic root of 851155120 is about 947.6971443218.

The spelling of 851155120 in words is "eight hundred fifty-one million, one hundred fifty-five thousand, one hundred twenty".