266485327796480 has 288 divisors, whose sum is σ = 727907757825024. Its totient is φ = 92599714971648.

The previous prime is 266485327796477. The next prime is 266485327796557. The reversal of 266485327796480 is 84697723584662.

It is a super-2 number, since 2×266485327796480² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 5037217709 + ... + 5037270611.

It is an arithmetic number, because the mean of its divisors is an integer number (2527457492448).

Almost surely, 2^{266485327796480} is an apocalyptic number.

266485327796480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266485327796480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363953878912512).

266485327796480 is an abundant number, since it is smaller than the sum of its proper divisors (461422430028544).

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

266485327796480 is a wasteful number, since it uses less digits than its factorization.

266485327796480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70761 (or 70747 counting only the distinct ones).

The product of its (nonzero) digits is 5852528640, while the sum is 77.

The spelling of 266485327796480 in words is "two hundred sixty-six trillion, four hundred eighty-five billion, three hundred twenty-seven million, seven hundred ninety-six thousand, four hundred eighty".