20403415050 has 192 divisors, whose sum is σ = 55056892800. Its totient is φ = 4982860800.

The previous prime is 20403415009. The next prime is 20403415057. The reversal of 20403415050 is 5051430402.

It is a self number, because there is not a number n which added to its sum of digits gives 20403415050.

It is not an unprimeable number, because it can be changed into a prime (20403415057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 19085916 + ... + 19086984.

It is an arithmetic number, because the mean of its divisors is an integer number (286754650).

Almost surely, 2^20403415050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20403415050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27528446400).

20403415050 is an abundant number, since it is smaller than the sum of its proper divisors (34653477750).

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

20403415050 is a wasteful number, since it uses less digits than its factorization.

20403415050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 20403415050 its reverse (5051430402), we get a palindrome (25454845452).

The spelling of 20403415050 in words is "twenty billion, four hundred three million, four hundred fifteen thousand, fifty".