2134543511 has 4 divisors (see below), whose sum is σ = 2260104912. Its totient is φ = 2008982112.

The previous prime is 2134543487. The next prime is 2134543513. The reversal of 2134543511 is 1153454312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2134543511 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 (2134543513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62780675 + ... + 62780708.

It is an arithmetic number, because the mean of its divisors is an integer number (565026228).

Almost surely, 2^2134543511 is an apocalyptic number.

2134543511 is a deficient number, since it is larger than the sum of its proper divisors (125561401).

2134543511 is a wasteful number, since it uses less digits than its factorization.

2134543511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125561400.

The product of its digits is 7200, while the sum is 29.

The square root of 2134543511 is about 46201.1202353363. The cubic root of 2134543511 is about 1287.5625529793.

Adding to 2134543511 its reverse (1153454312), we get a palindrome (3287997823).

The spelling of 2134543511 in words is "two billion, one hundred thirty-four million, five hundred forty-three thousand, five hundred eleven".