857229350652 has 72 divisors (see below), whose sum is σ = 2205989276400. Its totient is φ = 280596999168.

The previous prime is 857229350651. The next prime is 857229350699. The reversal of 857229350652 is 256053922758.

It is a happy number.

857229350652 is a `hidden beast` number, since 8 + 5 + 7 + 229 + 350 + 65 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857229350651) 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, 1755978 + ... + 2190414.

It is an arithmetic number, because the mean of its divisors is an integer number (30638739950).

Almost surely, 2^857229350652 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 857229350652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1102994638200).

857229350652 is an abundant number, since it is smaller than the sum of its proper divisors (1348759925748).

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

857229350652 is a wasteful number, since it uses less digits than its factorization.

857229350652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435435 (or 435430 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 54.

The spelling of 857229350652 in words is "eight hundred fifty-seven billion, two hundred twenty-nine million, three hundred fifty thousand, six hundred fifty-two".