20202422020040 has 64 divisors (see below), whose sum is σ = 48961872414000. Its totient is φ = 7457854897152.

The previous prime is 20202422020031. The next prime is 20202422020057. The reversal of 20202422020040 is 4002022420202.

It can be written as a sum of positive squares in 8 ways, for example, as 13949791743364 + 6252630276676 = 3734942^2 + 2500526^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20202422019994 and 20202422020021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1320215 + ... + 6492134.

Almost surely, 2^{20202422020040} is an apocalyptic number.

20202422020040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202422020040 is an abundant number, since it is smaller than the sum of its proper divisors (28759450393960).

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

20202422020040 is a wasteful number, since it uses less digits than its factorization.

20202422020040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7817346 (or 7817342 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20202422020040 its reverse (4002022420202), we get a palindrome (24204444440242).

The spelling of 20202422020040 in words is "twenty trillion, two hundred two billion, four hundred twenty-two million, twenty thousand, forty".