11611155005 has 8 divisors (see below), whose sum is σ = 13985184600. Its totient is φ = 9254391616.

The previous prime is 11611154993. The next prime is 11611155011. The reversal of 11611155005 is 50055111611.

It can be written as a sum of positive squares in 4 ways, for example, as 318479716 + 11292675289 = 17846^2 + 106267^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11611155005 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 7 ways as a sum of consecutive naturals, for example, 4315070 + ... + 4317759.

It is an arithmetic number, because the mean of its divisors is an integer number (1748148075).

Almost surely, 2^11611155005 is an apocalyptic number.

It is an amenable number.

11611155005 is a deficient number, since it is larger than the sum of its proper divisors (2374029595).

11611155005 is an equidigital number, since it uses as much as digits as its factorization.

11611155005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8633103.

The product of its (nonzero) digits is 750, while the sum is 26.

Adding to 11611155005 its reverse (50055111611), we get a palindrome (61666266616).

The spelling of 11611155005 in words is "eleven billion, six hundred eleven million, one hundred fifty-five thousand, five".