200021403144340 has 24 divisors (see below), whose sum is σ = 420700242958632. Its totient is φ = 79883742904320.

The previous prime is 200021403144319. The next prime is 200021403144377. The reversal of 200021403144340 is 43441304120002.

200021403144340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 104275099864324 + 95746303280016 = 10211518^2 + 9785004^2 .

It is a junction number, because it is equal to n+sod(n) for n = 200021403144299 and 200021403144308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7801133949 + ... + 7801159588.

It is an arithmetic number, because the mean of its divisors is an integer number (17529176789943).

Almost surely, 2^{200021403144340} is an apocalyptic number.

200021403144340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200021403144340 is an abundant number, since it is smaller than the sum of its proper divisors (220678839814292).

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

200021403144340 is a wasteful number, since it uses less digits than its factorization.

200021403144340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15602294187 (or 15602294185 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 200021403144340 its reverse (43441304120002), we get a palindrome (243462707264342).

The spelling of 200021403144340 in words is "two hundred trillion, twenty-one billion, four hundred three million, one hundred forty-four thousand, three hundred forty".