11099999505 has 32 divisors (see below), whose sum is σ = 20629893888. Its totient is φ = 4991097600.

The previous prime is 11099999497. The next prime is 11099999639. The reversal of 11099999505 is 50599999011.

It is not a de Polignac number, because 11099999505 - 2³ = 11099999497 is a prime.

It is a super-2 number, since 2×11099999505² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 860106 + ... + 872915.

It is an arithmetic number, because the mean of its divisors is an integer number (644684184).

Almost surely, 2^11099999505 is an apocalyptic number.

11099999505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11099999505 is a deficient number, since it is larger than the sum of its proper divisors (9529894383).

11099999505 is a wasteful number, since it uses less digits than its factorization.

11099999505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733097.

The product of its (nonzero) digits is 1476225, while the sum is 57.

The spelling of 11099999505 in words is "eleven billion, ninety-nine million, nine hundred ninety-nine thousand, five hundred five".