266294748685128 has 16 divisors (see below), whose sum is σ = 665736871712880. Its totient is φ = 88764916228368.

The previous prime is 266294748685127. The next prime is 266294748685157. The reversal of 266294748685128 is 821586847492662.

It is not an unprimeable number, because it can be changed into a prime (266294748685127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5547807264250 + ... + 5547807264297.

It is an arithmetic number, because the mean of its divisors is an integer number (41608554482055).

Almost surely, 2^{266294748685128} is an apocalyptic number.

It is an amenable number.

266294748685128 is an abundant number, since it is smaller than the sum of its proper divisors (399442123027752).

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

266294748685128 is a wasteful number, since it uses less digits than its factorization.

266294748685128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11095614528556 (or 11095614528552 counting only the distinct ones).

The product of its digits is 4459069440, while the sum is 78.

The spelling of 266294748685128 in words is "two hundred sixty-six trillion, two hundred ninety-four billion, seven hundred forty-eight million, six hundred eighty-five thousand, one hundred twenty-eight".