266044010226642 has 128 divisors (see below), whose sum is σ = 635995448524800. Its totient is φ = 82170825321600.

The previous prime is 266044010226641. The next prime is 266044010226679. The reversal of 266044010226642 is 246622010440662.

266044010226642 is a `hidden beast` number, since 2 + 6 + 6 + 0 + 440 + 102 + 2 + 66 + 42 = 666.

It is not an unprimeable number, because it can be changed into a prime (266044010226641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 69554167 + ... + 73279397.

It is an arithmetic number, because the mean of its divisors is an integer number (4968714441600).

Almost surely, 2^{266044010226642} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266044010226642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317997724262400).

266044010226642 is an abundant number, since it is smaller than the sum of its proper divisors (369951438298158).

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

266044010226642 is a wasteful number, since it uses less digits than its factorization.

266044010226642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726789 (or 3726783 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 45.

The spelling of 266044010226642 in words is "two hundred sixty-six trillion, forty-four billion, ten million, two hundred twenty-six thousand, six hundred forty-two".