20504071626420 has 96 divisors (see below), whose sum is σ = 57839904372096. Its totient is φ = 5427074419200.

The previous prime is 20504071626391. The next prime is 20504071626421. The reversal of 20504071626420 is 2462617040502.

It is a super-2 number, since 2×20504071626420² (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 (20504071626421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2916015 + ... + 7036425.

It is an arithmetic number, because the mean of its divisors is an integer number (602499003876).

Almost surely, 2^{20504071626420} is an apocalyptic number.

20504071626420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20504071626420 is an abundant number, since it is smaller than the sum of its proper divisors (37335832745676).

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

20504071626420 is a wasteful number, since it uses less digits than its factorization.

20504071626420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121041 (or 4121039 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

Adding to 20504071626420 its reverse (2462617040502), we get a palindrome (22966688666922).

The spelling of 20504071626420 in words is "twenty trillion, five hundred four billion, seventy-one million, six hundred twenty-six thousand, four hundred twenty".