1099038198720 has 1344 divisors, whose sum is σ = 4607756697600. Its totient is φ = 216964915200.

The previous prime is 1099038198697. The next prime is 1099038198763. The reversal of 1099038198720 is 278918309901.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1487196111 + ... + 1487196849.

It is an arithmetic number, because the mean of its divisors is an integer number (3428390400).

Almost surely, 2^{1099038198720} is an apocalyptic number.

1099038198720 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 1099038198720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2303878348800).

1099038198720 is an abundant number, since it is smaller than the sum of its proper divisors (3508718498880).

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

1099038198720 is a wasteful number, since it uses less digits than its factorization.

1099038198720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 57.

The spelling of 1099038198720 in words is "one trillion, ninety-nine billion, thirty-eight million, one hundred ninety-eight thousand, seven hundred twenty".