260606640197 has 4 divisors (see below), whose sum is σ = 266962899756. Its totient is φ = 254250380640.

The previous prime is 260606640191. The next prime is 260606640209. The reversal of 260606640197 is 791046606062.

260606640197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 17926264321 + 242680375876 = 133889^2 + 492626^2 .

It is a cyclic number.

It is not a de Polignac number, because 260606640197 - 2¹⁰ = 260606639173 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 (260606640191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3178129718 + ... + 3178129799.

It is an arithmetic number, because the mean of its divisors is an integer number (66740724939).

Almost surely, 2^260606640197 is an apocalyptic number.

It is an amenable number.

260606640197 is a deficient number, since it is larger than the sum of its proper divisors (6356259559).

260606640197 is an equidigital number, since it uses as much as digits as its factorization.

260606640197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6356259558.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 260606640197 in words is "two hundred sixty billion, six hundred six million, six hundred forty thousand, one hundred ninety-seven".