266241019824 has 160 divisors (see below), whose sum is σ = 824122252800. Its totient is φ = 81808185600.

The previous prime is 266241019819. The next prime is 266241019861. The reversal of 266241019824 is 428910142662.

It is a happy number.

266241019824 is a `hidden beast` number, since 2 + 6 + 624 + 1 + 0 + 19 + 8 + 2 + 4 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 266241019824.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4118149 + ... + 4182299.

It is an arithmetic number, because the mean of its divisors is an integer number (5150764080).

Almost surely, 2^266241019824 is an apocalyptic number.

266241019824 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 266241019824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (412061126400).

266241019824 is an abundant number, since it is smaller than the sum of its proper divisors (557881232976).

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

266241019824 is a wasteful number, since it uses less digits than its factorization.

266241019824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64920 (or 64908 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 266241019824 in words is "two hundred sixty-six billion, two hundred forty-one million, nineteen thousand, eight hundred twenty-four".