40020245550 has 144 divisors (see below), whose sum is σ = 110411683200. Its totient is φ = 10386432000.

The previous prime is 40020245533. The next prime is 40020245557. The reversal of 40020245550 is 5554202004.

40020245550 is a `hidden beast` number, since 4 + 0 + 0 + 202 + 455 + 5 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40020245557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8281635 + ... + 8286465.

It is an arithmetic number, because the mean of its divisors is an integer number (766747800).

Almost surely, 2^40020245550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40020245550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55205841600).

40020245550 is an abundant number, since it is smaller than the sum of its proper divisors (70391437650).

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

40020245550 is a wasteful number, since it uses less digits than its factorization.

40020245550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5339 (or 5331 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

Adding to 40020245550 its reverse (5554202004), we get a palindrome (45574447554).

The spelling of 40020245550 in words is "forty billion, twenty million, two hundred forty-five thousand, five hundred fifty".