11605105226 has 16 divisors (see below), whose sum is σ = 20450955168. Its totient is φ = 4869274800.

The previous prime is 11605105217. The next prime is 11605105273. The reversal of 11605105226 is 62250150611.

It is a happy number.

It is a super-2 number, since 2×11605105226² (a number of 21 digits) contains 22 as substring.

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, 20288360 + ... + 20288931.

It is an arithmetic number, because the mean of its divisors is an integer number (1278184698).

Almost surely, 2^11605105226 is an apocalyptic number.

11605105226 is a deficient number, since it is larger than the sum of its proper divisors (8845849942).

11605105226 is a wasteful number, since it uses less digits than its factorization.

11605105226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40577317.

The product of its (nonzero) digits is 3600, while the sum is 29.

Adding to 11605105226 its reverse (62250150611), we get a palindrome (73855255837).

The spelling of 11605105226 in words is "eleven billion, six hundred five million, one hundred five thousand, two hundred twenty-six".