266533908480 has 936 divisors, whose sum is σ = 1115531241552. Its totient is φ = 60866297856.

The previous prime is 266533908461. The next prime is 266533908503. The reversal of 266533908480 is 84809335662.

266533908480 is a `hidden beast` number, since 2 + 66 + 533 + 9 + 0 + 8 + 48 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 243854814 + ... + 243855906.

It is an arithmetic number, because the mean of its divisors is an integer number (1191806882).

Almost surely, 2^266533908480 is an apocalyptic number.

266533908480 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 266533908480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557765620776).

266533908480 is an abundant number, since it is smaller than the sum of its proper divisors (848997333072).

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

266533908480 is an equidigital number, since it uses as much as digits as its factorization.

266533908480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151 (or 1110 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 266533908480 in words is "two hundred sixty-six billion, five hundred thirty-three million, nine hundred eight thousand, four hundred eighty".