260005977485 has 4 divisors (see below), whose sum is σ = 312007172988. Its totient is φ = 208004781984.

The previous prime is 260005977467. The next prime is 260005977521. The reversal of 260005977485 is 584779500062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 584779500062 = 2 ⋅292389750031.

It can be written as a sum of positive squares in 2 ways, for example, as 136268769316 + 123737208169 = 369146^2 + 351763^2 .

It is a cyclic number.

It is not a de Polignac number, because 260005977485 - 2¹⁸ = 260005715341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26000597744 + ... + 26000597753.

It is an arithmetic number, because the mean of its divisors is an integer number (78001793247).

Almost surely, 2^260005977485 is an apocalyptic number.

It is an amenable number.

260005977485 is a deficient number, since it is larger than the sum of its proper divisors (52001195503).

260005977485 is an equidigital number, since it uses as much as digits as its factorization.

260005977485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52001195502.

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 260005977485 in words is "two hundred sixty billion, five million, nine hundred seventy-seven thousand, four hundred eighty-five".