20202423220404 has 48 divisors (see below), whose sum is σ = 52517072879040. Its totient is φ = 6716087062560.

The previous prime is 20202423220321. The next prime is 20202423220409. The reversal of 20202423220404 is 40402232420202.

20202423220404 is a `hidden beast` number, since 2 + 0 + 2 + 0 + 2 + 4 + 232 + 20 + 404 = 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 (20202423220409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250709682 + ... + 250790249.

It is an arithmetic number, because the mean of its divisors is an integer number (1094105684980).

Almost surely, 2^{20202423220404} is an apocalyptic number.

It is an amenable number.

20202423220404 is an abundant number, since it is smaller than the sum of its proper divisors (32314649658636).

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

20202423220404 is a wasteful number, since it uses less digits than its factorization.

20202423220404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501500317 (or 501500309 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 20202423220404 its reverse (40402232420202), we get a palindrome (60604655640606).

The spelling of 20202423220404 in words is "twenty trillion, two hundred two billion, four hundred twenty-three million, two hundred twenty thousand, four hundred four".