11561072107 has 8 divisors (see below), whose sum is σ = 12991706784. Its totient is φ = 10207769088.

The previous prime is 11561072093. The next prime is 11561072119. The reversal of 11561072107 is 70127016511.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 11561072107 - 2¹⁵ = 11561039339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11561075107) 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, 19332598 + ... + 19333195.

It is an arithmetic number, because the mean of its divisors is an integer number (1623963348).

Almost surely, 2^11561072107 is an apocalyptic number.

11561072107 is a deficient number, since it is larger than the sum of its proper divisors (1430634677).

11561072107 is a wasteful number, since it uses less digits than its factorization.

11561072107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38665829.

The product of its (nonzero) digits is 2940, while the sum is 31.

Adding to 11561072107 its reverse (70127016511), we get a palindrome (81688088618).

The spelling of 11561072107 in words is "eleven billion, five hundred sixty-one million, seventy-two thousand, one hundred seven".