1209324040880 has 80 divisors (see below), whose sum is σ = 2840682247200. Its totient is φ = 478748399616.

The previous prime is 1209324040853. The next prime is 1209324040907. The reversal of 1209324040880 is 880404239021.

It is an interprime number because it is at equal distance from previous prime (1209324040853) and next prime (1209324040907).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1209324040880² (a number of 25 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 8912102 + ... + 9046778.

It is an arithmetic number, because the mean of its divisors is an integer number (35508528090).

Almost surely, 2^{1209324040880} is an apocalyptic number.

1209324040880 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 1209324040880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1420341123600).

1209324040880 is an abundant number, since it is smaller than the sum of its proper divisors (1631358206320).

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

1209324040880 is a wasteful number, since it uses less digits than its factorization.

1209324040880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135846 (or 135840 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 1209324040880 in words is "one trillion, two hundred nine billion, three hundred twenty-four million, forty thousand, eight hundred eighty".