857065364712 has 128 divisors (see below), whose sum is σ = 2445683587200. Its totient is φ = 277898688000.

The previous prime is 857065364647. The next prime is 857065364717. The reversal of 857065364712 is 217463560758.

857065364712 is a `hidden beast` number, since 8 + 57 + 0 + 6 + 536 + 47 + 12 = 666.

857065364712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×857065364712² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (857065364717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40037212 + ... + 40058612.

It is an arithmetic number, because the mean of its divisors is an integer number (19106903025).

Almost surely, 2^857065364712 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 857065364712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1222841793600).

857065364712 is an abundant number, since it is smaller than the sum of its proper divisors (1588618222488).

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

857065364712 is a wasteful number, since it uses less digits than its factorization.

857065364712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26464 (or 26454 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 857065364712 in words is "eight hundred fifty-seven billion, sixty-five million, three hundred sixty-four thousand, seven hundred twelve".