11110000009999 has 16 divisors (see below), whose sum is σ = 12240402671520. Its totient is φ = 9999671040000.

The previous prime is 11110000009993. The next prime is 11110000010059. The reversal of 11110000009999 is 99990000001111.

It is a cyclic number.

It is not a de Polignac number, because 11110000009999 - 2³⁹ = 10560244196111 is a prime.

It is a Duffinian number.

11110000009999 is a modest number, since divided by 9999 gives 1111 as remainder.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110000009993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37503139 + ... + 37798219.

It is an arithmetic number, because the mean of its divisors is an integer number (765025166970).

Almost surely, 2^{11110000009999} is an apocalyptic number.

11110000009999 is a deficient number, since it is larger than the sum of its proper divisors (1130402661521).

11110000009999 is a wasteful number, since it uses less digits than its factorization.

11110000009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329082.

The product of its (nonzero) digits is 6561, while the sum is 40.

It can be divided in two parts, 1111000000 and 9999, that multiplied together give a square (11108889000000 = 3333000²).

The spelling of 11110000009999 in words is "eleven trillion, one hundred ten billion, nine thousand, nine hundred ninety-nine".