20004400450 has 24 divisors (see below), whose sum is σ = 37475882640. Its totient is φ = 7944190800.

The previous prime is 20004400421. The next prime is 20004400453. The reversal of 20004400450 is 5400440002.

It is not an unprimeable number, because it can be changed into a prime (20004400453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1432216 + ... + 1446115.

It is an arithmetic number, because the mean of its divisors is an integer number (1561495110).

Almost surely, 2^20004400450 is an apocalyptic number.

20004400450 is a deficient number, since it is larger than the sum of its proper divisors (17471482190).

20004400450 is a wasteful number, since it uses less digits than its factorization.

20004400450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878482 (or 2878477 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

Adding to 20004400450 its reverse (5400440002), we get a palindrome (25404840452).

The spelling of 20004400450 in words is "twenty billion, four million, four hundred thousand, four hundred fifty".