260243021790 has 96 divisors (see below), whose sum is σ = 691844250240. Its totient is φ = 67841382912.

The previous prime is 260243021789. The next prime is 260243021791. The reversal of 260243021790 is 97120342062.

260243021790 is a `hidden beast` number, since 2 + 6 + 0 + 2 + 430 + 217 + 9 + 0 = 666.

260243021790 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (260243021789) and next prime (260243021791).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260243021791) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3589216 + ... + 3661004.

It is an arithmetic number, because the mean of its divisors is an integer number (7206710940).

Almost surely, 2^260243021790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260243021790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (345922125120).

260243021790 is an abundant number, since it is smaller than the sum of its proper divisors (431601228450).

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

260243021790 is a wasteful number, since it uses less digits than its factorization.

260243021790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72706 (or 72703 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 260243021790 in words is "two hundred sixty billion, two hundred forty-three million, twenty-one thousand, seven hundred ninety".