20424341550 has 48 divisors (see below), whose sum is σ = 52854652800. Its totient is φ = 5209686240.

The previous prime is 20424341543. The next prime is 20424341591. The reversal of 20424341550 is 5514342402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2956600 + ... + 2963499.

It is an arithmetic number, because the mean of its divisors is an integer number (1101138600).

Almost surely, 2^20424341550 is an apocalyptic number.

20424341550 is an abundant number, since it is smaller than the sum of its proper divisors (32430311250).

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

20424341550 is a wasteful number, since it uses less digits than its factorization.

20424341550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5920137 (or 5920132 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 20424341550 its reverse (5514342402), we get a palindrome (25938683952).

The spelling of 20424341550 in words is "twenty billion, four hundred twenty-four million, three hundred forty-one thousand, five hundred fifty".