202020404444240 has 40 divisors (see below), whose sum is σ = 469704685536360. Its totient is φ = 80806915291136.

The previous prime is 202020404444237. The next prime is 202020404444273. The reversal of 202020404444240 is 42444404020202.

It can be written as a sum of positive squares in 4 ways, for example, as 127027506339904 + 74992898104336 = 11270648^2 + 8659844^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 202020404444197 and 202020404444206.

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, 14248925 + ... + 24638844.

It is an arithmetic number, because the mean of its divisors is an integer number (11742617138409).

Almost surely, 2^{202020404444240} is an apocalyptic number.

202020404444240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202020404444240 is an abundant number, since it is smaller than the sum of its proper divisors (267684281092120).

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

202020404444240 is a wasteful number, since it uses less digits than its factorization.

202020404444240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38952719 (or 38952713 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 202020404444240 its reverse (42444404020202), we get a palindrome (244464808464442).

The spelling of 202020404444240 in words is "two hundred two trillion, twenty billion, four hundred four million, four hundred forty-four thousand, two hundred forty".