1118823805440 has 1280 divisors, whose sum is σ = 4566719139840. Its totient is φ = 256992215040.

The previous prime is 1118823805439. The next prime is 1118823805447. The reversal of 1118823805440 is 445083288111.

1118823805440 is a `hidden beast` number, since 1 + 1 + 1 + 8 + 8 + 23 + 80 + 544 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1280).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (1118823805447) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2395768087 + ... + 2395768553.

It is an arithmetic number, because the mean of its divisors is an integer number (3567749328).

Almost surely, 2^{1118823805440} is an apocalyptic number.

1118823805440 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 1118823805440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2283359569920).

1118823805440 is an abundant number, since it is smaller than the sum of its proper divisors (3447895334400).

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

1118823805440 is a wasteful number, since it uses less digits than its factorization.

1118823805440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 1118823805440 in words is "one trillion, one hundred eighteen billion, eight hundred twenty-three million, eight hundred five thousand, four hundred forty".