109285280197 has 4 divisors (see below), whose sum is σ = 109286682316. Its totient is φ = 109283878080.

The previous prime is 109285280191. The next prime is 109285280243. The reversal of 109285280197 is 791082582901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20704044321 + 88581235876 = 143889^2 + 297626^2 .

It is a cyclic number.

It is not a de Polignac number, because 109285280197 - 2²⁷ = 109151062469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109285280191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576804 + ... + 742477.

It is an arithmetic number, because the mean of its divisors is an integer number (27321670579).

Almost surely, 2^109285280197 is an apocalyptic number.

It is an amenable number.

109285280197 is a deficient number, since it is larger than the sum of its proper divisors (1402119).

109285280197 is an equidigital number, since it uses as much as digits as its factorization.

109285280197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402118.

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 109285280197 in words is "one hundred nine billion, two hundred eighty-five million, two hundred eighty thousand, one hundred ninety-seven".