266442728546 has 8 divisors (see below), whose sum is σ = 400086127440. Its totient is φ = 133080686068.

The previous prime is 266442728533. The next prime is 266442728569. The reversal of 266442728546 is 645827244662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 266442728491 and 266442728500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70336736 + ... + 70340523.

It is an arithmetic number, because the mean of its divisors is an integer number (50010765930).

Almost surely, 2^266442728546 is an apocalyptic number.

266442728546 is a deficient number, since it is larger than the sum of its proper divisors (133643398894).

266442728546 is a wasteful number, since it uses less digits than its factorization.

266442728546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140678208.

The product of its digits is 30965760, while the sum is 56.

The spelling of 266442728546 in words is "two hundred sixty-six billion, four hundred forty-two million, seven hundred twenty-eight thousand, five hundred forty-six".