220343645412 has 96 divisors (see below), whose sum is σ = 623767992960. Its totient is φ = 66709319040.

The previous prime is 220343645387. The next prime is 220343645413. The reversal of 220343645412 is 214546343022.

220343645412 is a `hidden beast` number, since 2 + 2 + 0 + 3 + 4 + 3 + 645 + 4 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (220343645413) 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 31 ways as a sum of consecutive naturals, for example, 1213638 + ... + 1383330.

It is an arithmetic number, because the mean of its divisors is an integer number (6497583260).

Almost surely, 2^220343645412 is an apocalyptic number.

220343645412 is a gapful number since it is divisible by the number (22) 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 220343645412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311883996480).

220343645412 is an abundant number, since it is smaller than the sum of its proper divisors (403424347548).

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

220343645412 is a wasteful number, since it uses less digits than its factorization.

220343645412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170810 (or 170802 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 220343645412 its reverse (214546343022), we get a palindrome (434889988434).

The spelling of 220343645412 in words is "two hundred twenty billion, three hundred forty-three million, six hundred forty-five thousand, four hundred twelve".