20202023404100 has 18 divisors (see below), whose sum is σ = 43838390787114. Its totient is φ = 8080809361600.

The previous prime is 20202023404007. The next prime is 20202023404103. The reversal of 20202023404100 is 140432020202.

It can be written as a sum of positive squares in 3 ways, for example, as 4397375448064 + 15804647956036 = 2096992^2 + 3975506^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20202023404103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101010116921 + ... + 101010117120.

Almost surely, 2^{20202023404100} is an apocalyptic number.

20202023404100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20202023404100 is an abundant number, since it is smaller than the sum of its proper divisors (23636367383014).

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

20202023404100 is a wasteful number, since it uses less digits than its factorization.

20202023404100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202020234055 (or 202020234048 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20202023404100 its reverse (140432020202), we get a palindrome (20342455424302).

The spelling of 20202023404100 in words is "twenty trillion, two hundred two billion, twenty-three million, four hundred four thousand, one hundred".