11105055511 has 8 divisors (see below), whose sum is σ = 12139285248. Its totient is φ = 10074939000.

The previous prime is 11105055449. The next prime is 11105055529. The reversal of 11105055511 is 11555050111.

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 11105055511 - 2²¹ = 11102958359 is a prime.

It is a super-2 number, since 2×11105055511² (a number of 21 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 (11105055541) 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, 1022655 + ... + 1033456.

It is an arithmetic number, because the mean of its divisors is an integer number (1517410656).

Almost surely, 2^11105055511 is an apocalyptic number.

11105055511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11105055511 is a deficient number, since it is larger than the sum of its proper divisors (1034229737).

11105055511 is a wasteful number, since it uses less digits than its factorization.

11105055511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056613.

The product of its (nonzero) digits is 625, while the sum is 25.

The spelling of 11105055511 in words is "eleven billion, one hundred five million, fifty-five thousand, five hundred eleven".