1099591485440 has 384 divisors, whose sum is σ = 3142758528000. Its totient is φ = 368926064640.

The previous prime is 1099591485403. The next prime is 1099591485457. The reversal of 1099591485440 is 445841959901.

It is a self number, because there is not a number n which added to its sum of digits gives 1099591485440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165075710 + ... + 165082370.

It is an arithmetic number, because the mean of its divisors is an integer number (8184267000).

Almost surely, 2^{1099591485440} is an apocalyptic number.

1099591485440 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 1099591485440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571379264000).

1099591485440 is an abundant number, since it is smaller than the sum of its proper divisors (2043167042560).

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

1099591485440 is an frugal number, since it uses more digits than its factorization.

1099591485440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6756 (or 6722 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 59.

The spelling of 1099591485440 in words is "one trillion, ninety-nine billion, five hundred ninety-one million, four hundred eighty-five thousand, four hundred forty".