5011601611 has 4 divisors (see below), whose sum is σ = 5023018000. Its totient is φ = 5000185224.

The previous prime is 5011601603. The next prime is 5011601687. The reversal of 5011601611 is 1161061105.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1161061105 = 5 ⋅232212221.

It is a cyclic number.

It is not a de Polignac number, because 5011601611 - 2³ = 5011601603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5011601311) 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, 5707536 + ... + 5708413.

It is an arithmetic number, because the mean of its divisors is an integer number (1255754500).

Almost surely, 2^5011601611 is an apocalyptic number.

5011601611 is a deficient number, since it is larger than the sum of its proper divisors (11416389).

5011601611 is a wasteful number, since it uses less digits than its factorization.

5011601611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11416388.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 5011601611 is about 70792.6663645324. Note that the first 3 decimals coincide. The cubic root of 5011601611 is about 1711.2974901178.

Adding to 5011601611 its reverse (1161061105), we get a palindrome (6172662716).

The spelling of 5011601611 in words is "five billion, eleven million, six hundred one thousand, six hundred eleven".