20404421324104 has 16 divisors (see below), whose sum is σ = 38334959910000. Its totient is φ = 10181765348112.

The previous prime is 20404421324087. The next prime is 20404421324107. The reversal of 20404421324104 is 40142312440402.

It is a happy number.

It is a super-3 number, since 3×20404421324104³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (20404421324107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555660002 + ... + 2555667985.

It is an arithmetic number, because the mean of its divisors is an integer number (2395934994375).

Almost surely, 2^{20404421324104} is an apocalyptic number.

It is an amenable number.

20404421324104 is a deficient number, since it is larger than the sum of its proper divisors (17930538585896).

20404421324104 is a wasteful number, since it uses less digits than its factorization.

20404421324104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111328492 (or 5111328488 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 20404421324104 its reverse (40142312440402), we get a palindrome (60546733764506).

The spelling of 20404421324104 in words is "twenty trillion, four hundred four billion, four hundred twenty-one million, three hundred twenty-four thousand, one hundred four".