11611057205 has 32 divisors (see below), whose sum is σ = 16108657920. Its totient is φ = 7940459520.

The previous prime is 11611057189. The next prime is 11611057217. The reversal of 11611057205 is 50275011611.

It is not a de Polignac number, because 11611057205 - 2⁴ = 11611057189 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1151576 + ... + 1161614.

It is an arithmetic number, because the mean of its divisors is an integer number (503395560).

Almost surely, 2^11611057205 is an apocalyptic number.

It is an amenable number.

11611057205 is a deficient number, since it is larger than the sum of its proper divisors (4497600715).

11611057205 is a wasteful number, since it uses less digits than its factorization.

11611057205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11309.

The product of its (nonzero) digits is 2100, while the sum is 29.

Adding to 11611057205 its reverse (50275011611), we get a palindrome (61886068816).

The spelling of 11611057205 in words is "eleven billion, six hundred eleven million, fifty-seven thousand, two hundred five".