266264320220 has 48 divisors (see below), whose sum is σ = 586975334400. Its totient is φ = 101323095360.

The previous prime is 266264320213. The next prime is 266264320243. The reversal of 266264320220 is 22023462662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3602900 + ... + 3676059.

It is an arithmetic number, because the mean of its divisors is an integer number (12228652800).

Almost surely, 2^266264320220 is an apocalyptic number.

266264320220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266264320220 is an abundant number, since it is smaller than the sum of its proper divisors (320711014180).

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

266264320220 is a wasteful number, since it uses less digits than its factorization.

266264320220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7279058 (or 7279056 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 266264320220 its reverse (22023462662), we get a palindrome (288287782882).

The spelling of 266264320220 in words is "two hundred sixty-six billion, two hundred sixty-four million, three hundred twenty thousand, two hundred twenty".