20305421525350 has 192 divisors, whose sum is σ = 42275137343040. Its totient is φ = 7204638873600.

The previous prime is 20305421525339. The next prime is 20305421525351. The reversal of 20305421525350 is 5352512450302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20305421525351) 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, 5197188097 + ... + 5197192003.

It is an arithmetic number, because the mean of its divisors is an integer number (220183006995).

Almost surely, 2^{20305421525350} is an apocalyptic number.

20305421525350 is an abundant number, since it is smaller than the sum of its proper divisors (21969715817690).

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

20305421525350 is a wasteful number, since it uses less digits than its factorization.

20305421525350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5195 (or 5190 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 37.

Adding to 20305421525350 its reverse (5352512450302), we get a palindrome (25657933975652).

The spelling of 20305421525350 in words is "twenty trillion, three hundred five billion, four hundred twenty-one million, five hundred twenty-five thousand, three hundred fifty".