859572895122 has 18 divisors (see below), whose sum is σ = 1862416462023. Its totient is φ = 286522987212.

The previous prime is 859572895057. The next prime is 859572895123. The reversal of 859572895122 is 221598275958.

859572895122 is a `hidden beast` number, since 8 + 5 + 9 + 572 + 8 + 9 + 51 + 2 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 429786447561 + 429786447561 = 655581^2 + 655581^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=655581.

It is a super-2 number, since 2×859572895122² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 859572895122.

It is not an unprimeable number, because it can be changed into a prime (859572895123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3824223 + ... + 4042749.

Almost surely, 2^859572895122 is an apocalyptic number.

859572895122 is an abundant number, since it is smaller than the sum of its proper divisors (1002843566901).

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

859572895122 is an frugal number, since it uses more digits than its factorization.

859572895122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437062 (or 218532 counting only the distinct ones).

The product of its digits is 36288000, while the sum is 63.

The spelling of 859572895122 in words is "eight hundred fifty-nine billion, five hundred seventy-two million, eight hundred ninety-five thousand, one hundred twenty-two".