1104381866820 has 24 divisors (see below), whose sum is σ = 3092269227264. Its totient is φ = 294501831136.

The previous prime is 1104381866807. The next prime is 1104381866821. The reversal of 1104381866820 is 286681834011.

It is a self number, because there is not a number n which added to its sum of digits gives 1104381866820.

It is not an unprimeable number, because it can be changed into a prime (1104381866821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9203182164 + ... + 9203182283.

It is an arithmetic number, because the mean of its divisors is an integer number (128844551136).

Almost surely, 2^{1104381866820} is an apocalyptic number.

1104381866820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1104381866820 is an abundant number, since it is smaller than the sum of its proper divisors (1987887360444).

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

1104381866820 is a wasteful number, since it uses less digits than its factorization.

1104381866820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18406364459 (or 18406364457 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 1104381866820 in words is "one trillion, one hundred four billion, three hundred eighty-one million, eight hundred sixty-six thousand, eight hundred twenty".