11101561055517 has 8 divisors (see below), whose sum is σ = 14802097397920. Its totient is φ = 7401032708400.

The previous prime is 11101561055503. The next prime is 11101561055521. The reversal of 11101561055517 is 71555016510111.

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

It is not a de Polignac number, because 11101561055517 - 2³⁹ = 10551805241629 is a prime.

It is a super-2 number, since 2×11101561055517² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101561055917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3096834 + ... + 5638572.

It is an arithmetic number, because the mean of its divisors is an integer number (1850262174740).

Almost surely, 2^{11101561055517} is an apocalyptic number.

It is an amenable number.

11101561055517 is a deficient number, since it is larger than the sum of its proper divisors (3700536342403).

11101561055517 is a wasteful number, since it uses less digits than its factorization.

11101561055517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3997643.

The product of its (nonzero) digits is 26250, while the sum is 39.

Adding to 11101561055517 its reverse (71555016510111), we get a palindrome (82656577565628).

The spelling of 11101561055517 in words is "eleven trillion, one hundred one billion, five hundred sixty-one million, fifty-five thousand, five hundred seventeen".