285201904122 has 80 divisors (see below), whose sum is σ = 662075583840. Its totient is φ = 91653696288.

The previous prime is 285201904109. The next prime is 285201904157. The reversal of 285201904122 is 221409102582.

285201904122 is a `hidden beast` number, since 2 + 8 + 52 + 0 + 190 + 412 + 2 = 666.

It is a super-2 number, since 2×285201904122² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3164293 + ... + 3253175.

It is an arithmetic number, because the mean of its divisors is an integer number (8275944798).

Almost surely, 2^285201904122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285201904122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331037791920).

285201904122 is an abundant number, since it is smaller than the sum of its proper divisors (376873679718).

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

285201904122 is a wasteful number, since it uses less digits than its factorization.

285201904122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89609 (or 89600 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 285201904122 in words is "two hundred eighty-five billion, two hundred one million, nine hundred four thousand, one hundred twenty-two".