12086565820 has 96 divisors (see below), whose sum is σ = 31705067520. Its totient is φ = 3774366720.

The previous prime is 12086565793. The next prime is 12086565833. The reversal of 12086565820 is 2856568021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8130 + ... + 155689.

It is an arithmetic number, because the mean of its divisors is an integer number (330261120).

Almost surely, 2^12086565820 is an apocalyptic number.

12086565820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12086565820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15852533760).

12086565820 is an abundant number, since it is smaller than the sum of its proper divisors (19618501700).

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

12086565820 is a wasteful number, since it uses less digits than its factorization.

12086565820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163883 (or 163881 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 12086565820 in words is "twelve billion, eighty-six million, five hundred sixty-five thousand, eight hundred twenty".