266487441408 has 576 divisors, whose sum is σ = 831999168000. Its totient is φ = 81983176704.

The previous prime is 266487441383. The next prime is 266487441421. The reversal of 266487441408 is 804144784662.

266487441408 is a `hidden beast` number, since 26 + 64 + 87 + 441 + 40 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2444838858 + ... + 2444838966.

It is an arithmetic number, because the mean of its divisors is an integer number (1444443000).

Almost surely, 2^266487441408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266487441408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415999584000).

266487441408 is an abundant number, since it is smaller than the sum of its proper divisors (565511726592).

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

266487441408 is a wasteful number, since it uses less digits than its factorization.

266487441408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 54.

The spelling of 266487441408 in words is "two hundred sixty-six billion, four hundred eighty-seven million, four hundred forty-one thousand, four hundred eight".