20040404202402 has 8 divisors (see below), whose sum is σ = 40080808404816. Its totient is φ = 6680134734132.

The previous prime is 20040404202353. The next prime is 20040404202443. The reversal of 20040404202402 is 20420240404002.

It is a sphenic number, since it is the product of 3 distinct primes.

20040404202402 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670033683528 + ... + 1670033683539.

It is an arithmetic number, because the mean of its divisors is an integer number (5010101050602).

Almost surely, 2^{20040404202402} is an apocalyptic number.

20040404202402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20040404202402 is a wasteful number, since it uses less digits than its factorization.

20040404202402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340067367072.

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 20040404202402 its reverse (20420240404002), we get a palindrome (40460644606404).

The spelling of 20040404202402 in words is "twenty trillion, forty billion, four hundred four million, two hundred two thousand, four hundred two".