2005404550511 has 8 divisors (see below), whose sum is σ = 2028153018240. Its totient is φ = 1982660879232.

The previous prime is 2005404550493. The next prime is 2005404550559. The reversal of 2005404550511 is 1150554045002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2005404550511 - 2¹⁰ = 2005404549487 is a prime.

It is a super-2 number, since 2×2005404550511² (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 (2005404550561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354815 + ... + 2033888.

It is an arithmetic number, because the mean of its divisors is an integer number (253519127280).

Almost surely, 2^{2005404550511} is an apocalyptic number.

2005404550511 is a deficient number, since it is larger than the sum of its proper divisors (22748467729).

2005404550511 is an equidigital number, since it uses as much as digits as its factorization.

2005404550511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398225.

The product of its (nonzero) digits is 20000, while the sum is 32.

Adding to 2005404550511 its reverse (1150554045002), we get a palindrome (3155958595513).

The spelling of 2005404550511 in words is "two trillion, five billion, four hundred four million, five hundred fifty thousand, five hundred eleven".