266942708551089 has 48 divisors (see below), whose sum is σ = 407856702626880. Its totient is φ = 167774085803520.

The previous prime is 266942708551073. The next prime is 266942708551117. The reversal of 266942708551089 is 980155807249662.

266942708551089 is a `hidden beast` number, since 2 + 6 + 6 + 9 + 4 + 27 + 0 + 8 + 5 + 510 + 89 = 666.

It is not a de Polignac number, because 266942708551089 - 2⁴ = 266942708551073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (266942708551289) 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 47 ways as a sum of consecutive naturals, for example, 81342909 + ... + 84560949.

It is an arithmetic number, because the mean of its divisors is an integer number (8497014638060).

Almost surely, 2^{266942708551089} is an apocalyptic number.

It is an amenable number.

266942708551089 is a deficient number, since it is larger than the sum of its proper divisors (140913994075791).

266942708551089 is a wasteful number, since it uses less digits than its factorization.

266942708551089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220430 (or 3220427 counting only the distinct ones).

The product of its (nonzero) digits is 522547200, while the sum is 72.

The spelling of 266942708551089 in words is "two hundred sixty-six trillion, nine hundred forty-two billion, seven hundred eight million, five hundred fifty-one thousand, eighty-nine".