855168851 has 4 divisors (see below), whose sum is σ = 861902592. Its totient is φ = 848435112.

The previous prime is 855168763. The next prime is 855168859. The reversal of 855168851 is 158861558.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 855168851 - 2¹⁸ = 854906707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 855168796 and 855168805.

It is not an unprimeable number, because it can be changed into a prime (855168859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3366680 + ... + 3366933.

It is an arithmetic number, because the mean of its divisors is an integer number (215475648).

Almost surely, 2^855168851 is an apocalyptic number.

855168851 is a deficient number, since it is larger than the sum of its proper divisors (6733741).

855168851 is a wasteful number, since it uses less digits than its factorization.

855168851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6733740.

The product of its digits is 384000, while the sum is 47.

The square root of 855168851 is about 29243.2701830695. The cubic root of 855168851 is about 949.1844712998.

The spelling of 855168851 in words is "eight hundred fifty-five million, one hundred sixty-eight thousand, eight hundred fifty-one".