260245987279 has 4 divisors (see below), whose sum is σ = 275554574784. Its totient is φ = 244937399776.

The previous prime is 260245987249. The next prime is 260245987343. The reversal of 260245987279 is 972789542062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 260245987279 - 2⁷ = 260245987151 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 (260245987219) 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, 7654293727 + ... + 7654293760.

It is an arithmetic number, because the mean of its divisors is an integer number (68888643696).

Almost surely, 2^260245987279 is an apocalyptic number.

260245987279 is a deficient number, since it is larger than the sum of its proper divisors (15308587505).

260245987279 is a wasteful number, since it uses less digits than its factorization.

260245987279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15308587504.

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 260245987279 in words is "two hundred sixty billion, two hundred forty-five million, nine hundred eighty-seven thousand, two hundred seventy-nine".