266782223444 has 18 divisors (see below), whose sum is σ = 513169939002. Its totient is φ = 121264646800.

The previous prime is 266782223443. The next prime is 266782223447. The reversal of 266782223444 is 444322287662.

It can be written as a sum of positive squares in only one way, i.e., 147024699844 + 119757523600 = 383438^2 + 346060^2 .

It is a super-2 number, since 2×266782223444² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266782223392 and 266782223401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266782223443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275600987 + ... + 275601954.

Almost surely, 2^266782223444 is an apocalyptic number.

It is an amenable number.

266782223444 is a deficient number, since it is larger than the sum of its proper divisors (246387715558).

266782223444 is a wasteful number, since it uses less digits than its factorization.

266782223444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551202967 (or 551202954 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 50.

The spelling of 266782223444 in words is "two hundred sixty-six billion, seven hundred eighty-two million, two hundred twenty-three thousand, four hundred forty-four".