11099043905 has 8 divisors (see below), whose sum is σ = 13330137384. Its totient is φ = 8871712000.

The previous prime is 11099043859. The next prime is 11099043911. The reversal of 11099043905 is 50934099011.

It is a Cunningham number, because it is equal to 105352²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1315657984 + 9783385921 = 36272^2 + 98911^2 .

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

It is not a de Polignac number, because 11099043905 - 2⁸ = 11099043649 is a prime.

It is a Duffinian 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, 933896 + ... + 945705.

It is an arithmetic number, because the mean of its divisors is an integer number (1666267173).

Almost surely, 2^11099043905 is an apocalyptic number.

It is an amenable number.

11099043905 is a deficient number, since it is larger than the sum of its proper divisors (2231093479).

11099043905 is a wasteful number, since it uses less digits than its factorization.

11099043905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880787.

The product of its (nonzero) digits is 43740, while the sum is 41.

The spelling of 11099043905 in words is "eleven billion, ninety-nine million, forty-three thousand, nine hundred five".