11001111099965 has 16 divisors (see below), whose sum is σ = 15087326239872. Its totient is φ = 7543574960064.

The previous prime is 11001111099919. The next prime is 11001111100013. The reversal of 11001111099965 is 56999011110011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11001111099965 - 2²⁰ = 11001110051389 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 5862062 + ... + 7507728.

It is an arithmetic number, because the mean of its divisors is an integer number (942957889992).

Almost surely, 2^{11001111099965} is an apocalyptic number.

It is an amenable number.

11001111099965 is a deficient number, since it is larger than the sum of its proper divisors (4086215139907).

11001111099965 is a wasteful number, since it uses less digits than its factorization.

11001111099965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836676.

The product of its (nonzero) digits is 21870, while the sum is 44.

The spelling of 11001111099965 in words is "eleven trillion, one billion, one hundred eleven million, ninety-nine thousand, nine hundred sixty-five".