266189439332 has 24 divisors (see below), whose sum is σ = 490544577600. Its totient is φ = 126140024736.

The previous prime is 266189439331. The next prime is 266189439403. The reversal of 266189439332 is 233934981662.

It is a super-2 number, since 2×266189439332² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (266189439331) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13262282 + ... + 13282337.

It is an arithmetic number, because the mean of its divisors is an integer number (20439357400).

Almost surely, 2^266189439332 is an apocalyptic number.

It is an amenable number.

266189439332 is a deficient number, since it is larger than the sum of its proper divisors (224355138268).

266189439332 is a wasteful number, since it uses less digits than its factorization.

266189439332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26544755 (or 26544753 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 56.

The spelling of 266189439332 in words is "two hundred sixty-six billion, one hundred eighty-nine million, four hundred thirty-nine thousand, three hundred thirty-two".