20004571439950 has 192 divisors, whose sum is σ = 41838740006400. Its totient is φ = 7080468595200.

The previous prime is 20004571439947. The next prime is 20004571439953. The reversal of 20004571439950 is 5993417540002.

It is an interprime number because it is at equal distance from previous prime (20004571439947) and next prime (20004571439953).

It is a junction number, because it is equal to n+sod(n) for n = 20004571439894 and 20004571439903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004571439953) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 244307616 + ... + 244389484.

It is an arithmetic number, because the mean of its divisors is an integer number (217910104200).

Almost surely, 2^{20004571439950} is an apocalyptic number.

20004571439950 is an abundant number, since it is smaller than the sum of its proper divisors (21834168566450).

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

20004571439950 is a wasteful number, since it uses less digits than its factorization.

20004571439950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82187 (or 82182 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

Adding to 20004571439950 its reverse (5993417540002), we get a palindrome (25997988979952).

The spelling of 20004571439950 in words is "twenty trillion, four billion, five hundred seventy-one million, four hundred thirty-nine thousand, nine hundred fifty".