1111173311808 has 448 divisors, whose sum is σ = 3763290009600. Its totient is φ = 314939197440.

The previous prime is 1111173311789. The next prime is 1111173311819. The reversal of 1111173311808 is 8081133711111.

It is a tau number, because it is divible by the number of its divisors (448).

It is a super-2 number, since 2×1111173311808² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1503617103 + ... + 1503617841.

Almost surely, 2^{1111173311808} is an apocalyptic number.

1111173311808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1111173311808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1881645004800).

1111173311808 is an abundant number, since it is smaller than the sum of its proper divisors (2652116697792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111173311808 is a wasteful number, since it uses less digits than its factorization.

1111173311808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595 (or 1579 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 36.

The spelling of 1111173311808 in words is "one trillion, one hundred eleven billion, one hundred seventy-three million, three hundred eleven thousand, eight hundred eight".