260617005561 has 16 divisors (see below), whose sum is σ = 389324668608. Its totient is φ = 153680788800.

The previous prime is 260617005521. The next prime is 260617005569. The reversal of 260617005561 is 165500716062.

It is not a de Polignac number, because 260617005561 - 2¹¹ = 260617003513 is a prime.

It is a super-3 number, since 3×260617005561³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (260617005569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106721550 + ... + 106723991.

It is an arithmetic number, because the mean of its divisors is an integer number (24332791788).

Almost surely, 2^260617005561 is an apocalyptic number.

It is an amenable number.

260617005561 is a deficient number, since it is larger than the sum of its proper divisors (128707663047).

260617005561 is a wasteful number, since it uses less digits than its factorization.

260617005561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213445592.

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 260617005561 in words is "two hundred sixty billion, six hundred seventeen million, five thousand, five hundred sixty-one".