260353258261 has 4 divisors (see below), whose sum is σ = 264621344524. Its totient is φ = 256085172000.

The previous prime is 260353258259. The next prime is 260353258271. The reversal of 260353258261 is 162852353062.

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 65193408900 + 195159849361 = 255330^2 + 441769^2 .

It is a cyclic number.

It is not a de Polignac number, because 260353258261 - 2¹ = 260353258259 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 (260353258271) 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, 2134043040 + ... + 2134043161.

It is an arithmetic number, because the mean of its divisors is an integer number (66155336131).

Almost surely, 2^260353258261 is an apocalyptic number.

It is an amenable number.

260353258261 is a deficient number, since it is larger than the sum of its proper divisors (4268086263).

260353258261 is an equidigital number, since it uses as much as digits as its factorization.

260353258261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4268086262.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 260353258261 in words is "two hundred sixty billion, three hundred fifty-three million, two hundred fifty-eight thousand, two hundred sixty-one".