2113541611 has 4 divisors (see below), whose sum is σ = 2114818792. Its totient is φ = 2112264432.

The previous prime is 2113541597. The next prime is 2113541621. The reversal of 2113541611 is 1161453112.

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

It is a cyclic number.

It is not a de Polignac number, because 2113541611 - 2¹⁵ = 2113508843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113541621) 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, 636105 + ... + 639418.

It is an arithmetic number, because the mean of its divisors is an integer number (528704698).

Almost surely, 2^2113541611 is an apocalyptic number.

2113541611 is a deficient number, since it is larger than the sum of its proper divisors (1277181).

2113541611 is a wasteful number, since it uses less digits than its factorization.

2113541611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277180.

The product of its digits is 720, while the sum is 25.

The square root of 2113541611 is about 45973.2706145647. The cubic root of 2113541611 is about 1283.3258259114.

Adding to 2113541611 its reverse (1161453112), we get a palindrome (3274994723).

The spelling of 2113541611 in words is "two billion, one hundred thirteen million, five hundred forty-one thousand, six hundred eleven".