2005134543 has 12 divisors (see below), whose sum is σ = 3048742840. Its totient is φ = 1266400656.

The previous prime is 2005134541. The next prime is 2005134569. The reversal of 2005134543 is 3454315002.

2005134543 is a `hidden beast` number, since 200 + 5 + 1 + 3 + 454 + 3 = 666.

It is not a de Polignac number, because 2005134543 - 2¹ = 2005134541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005134541) 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, 5862796 + ... + 5863137.

Almost surely, 2^2005134543 is an apocalyptic number.

2005134543 is a deficient number, since it is larger than the sum of its proper divisors (1043608297).

2005134543 is a wasteful number, since it uses less digits than its factorization.

2005134543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11725958 (or 11725955 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 2005134543 is about 44778.7286889657. The cubic root of 2005134543 is about 1260.9983150107.

Adding to 2005134543 its reverse (3454315002), we get a palindrome (5459449545).

The spelling of 2005134543 in words is "two billion, five million, one hundred thirty-four thousand, five hundred forty-three".