11105455565 has 8 divisors (see below), whose sum is σ = 13329245688. Its totient is φ = 8882565120.

The previous prime is 11105455549. The next prime is 11105455577. The reversal of 11105455565 is 56555450111.

It can be written as a sum of positive squares in 4 ways, for example, as 1141223524 + 9964232041 = 33782^2 + 99821^2 .

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

It is not a de Polignac number, because 11105455565 - 2⁴ = 11105455549 is a prime.

It is a super-2 number, since 2×11105455565² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 197456 + ... + 247385.

It is an arithmetic number, because the mean of its divisors is an integer number (1666155711).

Almost surely, 2^11105455565 is an apocalyptic number.

It is an amenable number.

11105455565 is a deficient number, since it is larger than the sum of its proper divisors (2223790123).

11105455565 is an equidigital number, since it uses as much as digits as its factorization.

11105455565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449839.

The product of its (nonzero) digits is 75000, while the sum is 38.

The spelling of 11105455565 in words is "eleven billion, one hundred five million, four hundred fifty-five thousand, five hundred sixty-five".