20404044130420 has 24 divisors (see below), whose sum is σ = 42867528082848. Its totient is φ = 8157991860000.

The previous prime is 20404044130403. The next prime is 20404044130429. The reversal of 20404044130420 is 2403144040402.

It is a super-2 number, since 2×20404044130420² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404044130429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226565866 + ... + 226655905.

It is an arithmetic number, because the mean of its divisors is an integer number (1786147003452).

Almost surely, 2^{20404044130420} is an apocalyptic number.

20404044130420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20404044130420 is an abundant number, since it is smaller than the sum of its proper divisors (22463483952428).

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

20404044130420 is a wasteful number, since it uses less digits than its factorization.

20404044130420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453224031 (or 453224029 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 20404044130420 its reverse (2403144040402), we get a palindrome (22807188170822).

The spelling of 20404044130420 in words is "twenty trillion, four hundred four billion, forty-four million, one hundred thirty thousand, four hundred twenty".