857328061722 has 64 divisors (see below), whose sum is σ = 1905437858688. Its totient is φ = 257117836800.

The previous prime is 857328061721. The next prime is 857328061727. The reversal of 857328061722 is 227160823758.

857328061722 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 2×857328061722² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (857328061721) 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, 221272 + ... + 1328012.

It is an arithmetic number, because the mean of its divisors is an integer number (29772466542).

Almost surely, 2^857328061722 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 857328061722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (952718929344).

857328061722 is an abundant number, since it is smaller than the sum of its proper divisors (1048109796966).

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

857328061722 is a wasteful number, since it uses less digits than its factorization.

857328061722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106876 (or 1106854 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 857328061722 in words is "eight hundred fifty-seven billion, three hundred twenty-eight million, sixty-one thousand, seven hundred twenty-two".