11100410561 has 8 divisors (see below), whose sum is σ = 11475479400. Its totient is φ = 10730309760.

The previous prime is 11100410539. The next prime is 11100410599. The reversal of 11100410561 is 16501400111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 367450561 + 10732960000 = 19169^2 + 103600^2 .

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-11100410561 is a prime.

It is a super-2 number, since 2×11100410561² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11100410161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1237466 + ... + 1246403.

It is an arithmetic number, because the mean of its divisors is an integer number (1434434925).

Almost surely, 2^11100410561 is an apocalyptic number.

It is an amenable number.

11100410561 is a deficient number, since it is larger than the sum of its proper divisors (375068839).

11100410561 is a wasteful number, since it uses less digits than its factorization.

11100410561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484019.

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 11100410561 its reverse (16501400111), we get a palindrome (27601810672).

The spelling of 11100410561 in words is "eleven billion, one hundred million, four hundred ten thousand, five hundred sixty-one".