12002065920 has 960 divisors, whose sum is σ = 49764939840. Its totient is φ = 2723217408.

The previous prime is 12002065913. The next prime is 12002065921. The reversal of 12002065920 is 2956020021.

12002065920 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 2 + 0 + 659 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12002065921) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 324380142 + ... + 324380178.

It is an arithmetic number, because the mean of its divisors is an integer number (51838479).

Almost surely, 2^12002065920 is an apocalyptic number.

12002065920 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 12002065920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24882469920).

12002065920 is an abundant number, since it is smaller than the sum of its proper divisors (37762873920).

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

12002065920 is a wasteful number, since it uses less digits than its factorization.

12002065920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 12002065920 its reverse (2956020021), we get a palindrome (14958085941).

The spelling of 12002065920 in words is "twelve billion, two million, sixty-five thousand, nine hundred twenty".