12020045850 has 288 divisors, whose sum is σ = 34407172800. Its totient is φ = 3004646400.

The previous prime is 12020045827. The next prime is 12020045861. The reversal of 12020045850 is 5854002021.

It is a happy number.

12020045850 is a `hidden beast` number, since 1 + 2 + 0 + 200 + 458 + 5 + 0 = 666.

It is a super-2 number, since 2×12020045850² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 86475081 + ... + 86475219.

It is an arithmetic number, because the mean of its divisors is an integer number (119469350).

Almost surely, 2^12020045850 is an apocalyptic number.

12020045850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12020045850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17203586400).

12020045850 is an abundant number, since it is smaller than the sum of its proper divisors (22387126950).

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

12020045850 is a wasteful number, since it uses less digits than its factorization.

12020045850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 12020045850 its reverse (5854002021), we get a palindrome (17874047871).

The spelling of 12020045850 in words is "twelve billion, twenty million, forty-five thousand, eight hundred fifty".