260998576217 has 4 divisors (see below), whose sum is σ = 262599794640. Its totient is φ = 259397357796.

The previous prime is 260998576213. The next prime is 260998576243. The reversal of 260998576217 is 712675899062.

260998576217 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 712675899062 = 2 ⋅356337949531.

It is a cyclic number.

It is not a de Polignac number, because 260998576217 - 2² = 260998576213 is a prime.

It is a super-3 number, since 3×260998576217³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 260998576217.

It is not an unprimeable number, because it can be changed into a prime (260998576213) 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, 800608967 + ... + 800609292.

It is an arithmetic number, because the mean of its divisors is an integer number (65649948660).

Almost surely, 2^260998576217 is an apocalyptic number.

It is an amenable number.

260998576217 is a deficient number, since it is larger than the sum of its proper divisors (1601218423).

260998576217 is a wasteful number, since it uses less digits than its factorization.

260998576217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601218422.

The product of its (nonzero) digits is 22861440, while the sum is 62.

The spelling of 260998576217 in words is "two hundred sixty billion, nine hundred ninety-eight million, five hundred seventy-six thousand, two hundred seventeen".