260644220220 has 48 divisors (see below), whose sum is σ = 730491840288. Its totient is φ = 69439599360.

The previous prime is 260644220219. The next prime is 260644220227. The reversal of 260644220220 is 22022446062.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260644220227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1983499 + ... + 2110818.

It is an arithmetic number, because the mean of its divisors is an integer number (15218580006).

Almost surely, 2^260644220220 is an apocalyptic number.

260644220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260644220220 is an abundant number, since it is smaller than the sum of its proper divisors (469847620068).

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

260644220220 is a wasteful number, since it uses less digits than its factorization.

260644220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4095390 (or 4095388 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 260644220220 its reverse (22022446062), we get a palindrome (282666666282).

The spelling of 260644220220 in words is "two hundred sixty billion, six hundred forty-four million, two hundred twenty thousand, two hundred twenty".