2005404550492 has 12 divisors (see below), whose sum is σ = 4010809101040. Its totient is φ = 859459093056.

The previous prime is 2005404550489. The next prime is 2005404550493. The reversal of 2005404550492 is 2940554045002.

2005404550492 is an admirable number.

It is a super-2 number, since 2×2005404550492² (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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35810795517 + ... + 35810795572.

Almost surely, 2^{2005404550492} is an apocalyptic number.

It is an amenable number.

2005404550492 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2005404550492 is a wasteful number, since it uses less digits than its factorization.

2005404550492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71621591100 (or 71621591098 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 2005404550492 its reverse (2940554045002), we get a palindrome (4945958595494).

The spelling of 2005404550492 in words is "two trillion, five billion, four hundred four million, five hundred fifty thousand, four hundred ninety-two".