2005404550494 has 32 divisors (see below), whose sum is σ = 4091654601216. Its totient is φ = 655106689440.

The previous prime is 2005404550493. The next prime is 2005404550559. The reversal of 2005404550494 is 4940554045002.

It is a super-2 number, since 2×2005404550494² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005404550493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14023237 + ... + 14165520.

It is an arithmetic number, because the mean of its divisors is an integer number (127864206288).

Almost surely, 2^{2005404550494} is an apocalyptic number.

2005404550494 is an abundant number, since it is smaller than the sum of its proper divisors (2086250050722).

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

2005404550494 is a wasteful number, since it uses less digits than its factorization.

2005404550494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28189000.

The product of its (nonzero) digits is 576000, while the sum is 42.

Adding to 2005404550494 its reverse (4940554045002), we get a palindrome (6945958595496).

The spelling of 2005404550494 in words is "two trillion, five billion, four hundred four million, five hundred fifty thousand, four hundred ninety-four".