36501220000 has 120 divisors (see below), whose sum is σ = 102627223776. Its totient is φ = 12514656000.

The previous prime is 36501219991. The next prime is 36501220001. The reversal of 36501220000 is 2210563.

It is a happy number.

It is a super-2 number, since 2×36501220000² (a number of 22 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 36501220000.

It is not an unprimeable number, because it can be changed into a prime (36501220001) 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 19 ways as a sum of consecutive naturals, for example, 9639 + ... + 270361.

Almost surely, 2^36501220000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36501220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51313611888).

36501220000 is an abundant number, since it is smaller than the sum of its proper divisors (66126003776).

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

36501220000 is an equidigital number, since it uses as much as digits as its factorization.

36501220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260760 (or 260737 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 36501220000 its reverse (2210563), we get a palindrome (36503430563).

The spelling of 36501220000 in words is "thirty-six billion, five hundred one million, two hundred twenty thousand".