1097830609920 has 792 divisors, whose sum is σ = 4310606465568. Its totient is φ = 266051174400.

The previous prime is 1097830609913. The next prime is 1097830609937. The reversal of 1097830609920 is 299060387901.

1097830609920 is a `hidden beast` number, since 1 + 0 + 9 + 7 + 8 + 3 + 0 + 609 + 9 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (792).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 369514035 + ... + 369517005.

Almost surely, 2^{1097830609920} is an apocalyptic number.

1097830609920 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 1097830609920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2155303232784).

1097830609920 is an abundant number, since it is smaller than the sum of its proper divisors (3212775855648).

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

1097830609920 is an frugal number, since it uses more digits than its factorization.

1097830609920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031 (or 2992 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 1097830609920 in words is "one trillion, ninety-seven billion, eight hundred thirty million, six hundred nine thousand, nine hundred twenty".