1109660428800 has 3840 divisors, whose sum is σ = 5553073152000. Its totient is φ = 214592716800.

The previous prime is 1109660428729. The next prime is 1109660428813. The reversal of 1109660428800 is 88240669011.

1109660428800 is a `hidden beast` number, since 1 + 1 + 0 + 96 + 60 + 428 + 80 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (3840).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 29990822382 + ... + 29990822418.

It is an arithmetic number, because the mean of its divisors is an integer number (1446112800).

Almost surely, 2^{1109660428800} is an apocalyptic number.

1109660428800 is a gapful number since it is divisible by the number (10) 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 1109660428800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2776536576000).

1109660428800 is an abundant number, since it is smaller than the sum of its proper divisors (4443412723200).

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

1109660428800 is a wasteful number, since it uses less digits than its factorization.

1109660428800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 1109660428800 in words is "one trillion, one hundred nine billion, six hundred sixty million, four hundred twenty-eight thousand, eight hundred".