11100616115561 has 8 divisors (see below), whose sum is σ = 12762384996480. Its totient is φ = 9457838879328.

The previous prime is 11100616115557. The next prime is 11100616115587. The reversal of 11100616115561 is 16551161600111.

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

It is not a de Polignac number, because 11100616115561 - 2² = 11100616115557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11100616115521) 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, 4747909916 + ... + 4747912253.

It is an arithmetic number, because the mean of its divisors is an integer number (1595298124560).

Almost surely, 2^{11100616115561} is an apocalyptic number.

It is an amenable number.

11100616115561 is a deficient number, since it is larger than the sum of its proper divisors (1661768880919).

11100616115561 is an equidigital number, since it uses as much as digits as its factorization.

11100616115561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9495822343.

The product of its (nonzero) digits is 5400, while the sum is 35.

Adding to 11100616115561 its reverse (16551161600111), we get a palindrome (27651777715672).

The spelling of 11100616115561 in words is "eleven trillion, one hundred billion, six hundred sixteen million, one hundred fifteen thousand, five hundred sixty-one".