260709357856 has 48 divisors (see below), whose sum is σ = 536143031424. Its totient is φ = 124557801984.

The previous prime is 260709357749. The next prime is 260709357863. The reversal of 260709357856 is 658753907062.

260709357856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 260709357856.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 528556 + ... + 894868.

It is an arithmetic number, because the mean of its divisors is an integer number (11169646488).

Almost surely, 2^260709357856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260709357856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268071515712).

260709357856 is an abundant number, since it is smaller than the sum of its proper divisors (275433673568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

260709357856 is a wasteful number, since it uses less digits than its factorization.

260709357856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367313 (or 367305 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 58.

The spelling of 260709357856 in words is "two hundred sixty billion, seven hundred nine million, three hundred fifty-seven thousand, eight hundred fifty-six".