210342223440 has 160 divisors (see below), whose sum is σ = 728267495040. Its totient is φ = 55800520704.

The previous prime is 210342223411. The next prime is 210342223447. The reversal of 210342223440 is 44322243012.

210342223440 is a `hidden beast` number, since 2 + 1 + 0 + 3 + 422 + 234 + 4 + 0 = 666.

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 (210342223447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164599 + ... + 669161.

It is an arithmetic number, because the mean of its divisors is an integer number (4551671844).

Almost surely, 2^210342223440 is an apocalyptic number.

210342223440 is a gapful number since it is divisible by the number (20) 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 210342223440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (364133747520).

210342223440 is an abundant number, since it is smaller than the sum of its proper divisors (517925271600).

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

210342223440 is a wasteful number, since it uses less digits than its factorization.

210342223440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504778 (or 504766 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 210342223440 its reverse (44322243012), we get a palindrome (254664466452).

The spelling of 210342223440 in words is "two hundred ten billion, three hundred forty-two million, two hundred twenty-three thousand, four hundred forty".