206352326340 has 144 divisors (see below), whose sum is σ = 653932122480. Its totient is φ = 52603622400.

The previous prime is 206352326333. The next prime is 206352326347. The reversal of 206352326340 is 43623253602.

206352326340 is a `hidden beast` number, since 2 + 0 + 6 + 352 + 3 + 263 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (206352326333) and next prime (206352326347).

It can be written as a sum of positive squares in 8 ways, for example, as 838797444 + 205513528896 = 28962^2 + 453336^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 206352326295 and 206352326304.

It is not an unprimeable number, because it can be changed into a prime (206352326347) 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 47 ways as a sum of consecutive naturals, for example, 331522 + ... + 722918.

It is an arithmetic number, because the mean of its divisors is an integer number (4541195295).

Almost surely, 2^206352326340 is an apocalyptic number.

206352326340 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 206352326340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326966061240).

206352326340 is an abundant number, since it is smaller than the sum of its proper divisors (447579796140).

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

206352326340 is a wasteful number, since it uses less digits than its factorization.

206352326340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391542 (or 391537 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 36.

Adding to 206352326340 its reverse (43623253602), we get a palindrome (249975579942).

The spelling of 206352326340 in words is "two hundred six billion, three hundred fifty-two million, three hundred twenty-six thousand, three hundred forty".