20005241600 has 54 divisors (see below), whose sum is σ = 49516114620. Its totient is φ = 8002094080.

The previous prime is 20005241591. The next prime is 20005241603. The reversal of 20005241600 is 614250002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (20005241603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1556510 + ... + 1569309.

Almost surely, 2^20005241600 is an apocalyptic number.

20005241600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20005241600 is an abundant number, since it is smaller than the sum of its proper divisors (29510873020).

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

20005241600 is an equidigital number, since it uses as much as digits as its factorization.

20005241600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125845 (or 3125826 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 20005241600 its reverse (614250002), we get a palindrome (20619491602).

The spelling of 20005241600 in words is "twenty billion, five million, two hundred forty-one thousand, six hundred".