266500685364480 has 2016 divisors, whose sum is σ = 1131555230066688. Its totient is φ = 58821496012800.

The previous prime is 266500685364461. The next prime is 266500685364499. The reversal of 266500685364480 is 84463586005662.

It is a happy number.

266500685364480 is a `hidden beast` number, since 2 + 6 + 6 + 50 + 0 + 6 + 8 + 536 + 4 + 48 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (266500685364461) and next prime (266500685364499).

It is a tau number, because it is divible by the number of its divisors (2016).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

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 223 ways as a sum of consecutive naturals, for example, 116835020940 + ... + 116835023220.

Almost surely, 2^{266500685364480} is an apocalyptic number.

266500685364480 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 266500685364480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565777615033344).

266500685364480 is an abundant number, since it is smaller than the sum of its proper divisors (865054544702208).

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

266500685364480 is an equidigital number, since it uses as much as digits as its factorization.

266500685364480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935 (or 2906 counting only the distinct ones).

The product of its (nonzero) digits is 199065600, while the sum is 63.

The spelling of 266500685364480 in words is "two hundred sixty-six trillion, five hundred billion, six hundred eighty-five million, three hundred sixty-four thousand, four hundred eighty".