11601115005 has 32 divisors (see below), whose sum is σ = 18637407360. Its totient is φ = 6162105600.

The previous prime is 11601114997. The next prime is 11601115007. The reversal of 11601115005 is 50051110611.

It is a happy number.

It is not a de Polignac number, because 11601115005 - 2³ = 11601114997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11601115007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7994530 + ... + 7995980.

It is an arithmetic number, because the mean of its divisors is an integer number (582418980).

Almost surely, 2^11601115005 is an apocalyptic number.

11601115005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11601115005 is a deficient number, since it is larger than the sum of its proper divisors (7036292355).

11601115005 is a wasteful number, since it uses less digits than its factorization.

11601115005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3261.

The product of its (nonzero) digits is 150, while the sum is 21.

Adding to 11601115005 its reverse (50051110611), we get a palindrome (61652225616).

The spelling of 11601115005 in words is "eleven billion, six hundred one million, one hundred fifteen thousand, five".