1100109485556 has 72 divisors (see below), whose sum is σ = 2832869370240. Its totient is φ = 359862690816.

The previous prime is 1100109485537. The next prime is 1100109485557. The reversal of 1100109485556 is 6555849010011.

1100109485556 is a `hidden beast` number, since 1 + 1 + 0 + 0 + 1 + 0 + 94 + 8 + 5 + 556 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100109485557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 776725 + ... + 1674371.

It is an arithmetic number, because the mean of its divisors is an integer number (39345407920).

Almost surely, 2^{1100109485556} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100109485556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1416434685120).

1100109485556 is an abundant number, since it is smaller than the sum of its proper divisors (1732759884684).

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

1100109485556 is a wasteful number, since it uses less digits than its factorization.

1100109485556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898293 (or 898288 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 45.

The spelling of 1100109485556 in words is "one trillion, one hundred billion, one hundred nine million, four hundred eighty-five thousand, five hundred fifty-six".