2005530403545 has 16 divisors (see below), whose sum is σ = 3565387384320. Its totient is φ = 1069616215152.

The previous prime is 2005530403489. The next prime is 2005530403579. The reversal of 2005530403545 is 5453040355002.

2005530403545 is a `hidden beast` number, since 20 + 0 + 5 + 53 + 0 + 40 + 3 + 545 = 666.

It is not a de Polignac number, because 2005530403545 - 2³⁴ = 1988350534361 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7427890249 + ... + 7427890518.

It is an arithmetic number, because the mean of its divisors is an integer number (222836711520).

Almost surely, 2^{2005530403545} is an apocalyptic number.

It is an amenable number.

2005530403545 is a deficient number, since it is larger than the sum of its proper divisors (1559856980775).

2005530403545 is a wasteful number, since it uses less digits than its factorization.

2005530403545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14855780781 (or 14855780775 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 36.

Adding to 2005530403545 its reverse (5453040355002), we get a palindrome (7458570758547).

The spelling of 2005530403545 in words is "two trillion, five billion, five hundred thirty million, four hundred three thousand, five hundred forty-five".