20404323433212 has 48 divisors (see below), whose sum is σ = 47781416740512. Its totient is φ = 6776967536640.

The previous prime is 20404323433201. The next prime is 20404323433223. The reversal of 20404323433212 is 21233432340402.

It is an interprime number because it is at equal distance from previous prime (20404323433201) and next prime (20404323433223).

It is a congruent number.

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, 96242268 + ... + 96454044.

It is an arithmetic number, because the mean of its divisors is an integer number (995446182094).

Almost surely, 2^{20404323433212} is an apocalyptic number.

It is an amenable number.

20404323433212 is an abundant number, since it is smaller than the sum of its proper divisors (27377093307300).

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

20404323433212 is a wasteful number, since it uses less digits than its factorization.

20404323433212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240638 (or 240636 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 20404323433212 its reverse (21233432340402), we get a palindrome (41637755773614).

The spelling of 20404323433212 in words is "twenty trillion, four hundred four billion, three hundred twenty-three million, four hundred thirty-three thousand, two hundred twelve".