1097830609921 has 16 divisors (see below), whose sum is σ = 1119311481600. Its totient is φ = 1076554252800.

The previous prime is 1097830609913. The next prime is 1097830609937. The reversal of 1097830609921 is 1299060387901.

It is a cyclic number.

It is not a de Polignac number, because 1097830609921 - 2³ = 1097830609913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1097830609951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11562481 + ... + 11657041.

It is an arithmetic number, because the mean of its divisors is an integer number (69956967600).

Almost surely, 2^{1097830609921} is an apocalyptic number.

It is an amenable number.

1097830609921 is a deficient number, since it is larger than the sum of its proper divisors (21480871679).

1097830609921 is an equidigital number, since it uses as much as digits as its factorization.

1097830609921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95640.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The spelling of 1097830609921 in words is "one trillion, ninety-seven billion, eight hundred thirty million, six hundred nine thousand, nine hundred twenty-one".