266440009602 has 64 divisors (see below), whose sum is σ = 594165559680. Its totient is φ = 79087110144.

The previous prime is 266440009559. The next prime is 266440009613. The reversal of 266440009602 is 206900044662.

266440009602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2635378 + ... + 2734610.

It is an arithmetic number, because the mean of its divisors is an integer number (9283836870).

Almost surely, 2^266440009602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266440009602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297082779840).

266440009602 is an abundant number, since it is smaller than the sum of its proper divisors (327725550078).

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

266440009602 is a wasteful number, since it uses less digits than its factorization.

266440009602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100467.

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 266440009602 in words is "two hundred sixty-six billion, four hundred forty million, nine thousand, six hundred two".