266498004864 has 256 divisors, whose sum is σ = 880236564480. Its totient is φ = 69559713792.

The previous prime is 266498004853. The next prime is 266498004869. The reversal of 266498004864 is 468400894662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266498004869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3350257 + ... + 3428879.

It is an arithmetic number, because the mean of its divisors is an integer number (3438424080).

Almost surely, 2^266498004864 is an apocalyptic number.

266498004864 is a gapful number since it is divisible by the number (24) 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 266498004864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (440118282240).

266498004864 is an abundant number, since it is smaller than the sum of its proper divisors (613738559616).

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

266498004864 is a wasteful number, since it uses less digits than its factorization.

266498004864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78757 (or 78745 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 57.

The spelling of 266498004864 in words is "two hundred sixty-six billion, four hundred ninety-eight million, four thousand, eight hundred sixty-four".