266671762722 has 12 divisors (see below), whose sum is σ = 577788819270. Its totient is φ = 88890587568.

The previous prime is 266671762673. The next prime is 266671762733. The reversal of 266671762722 is 227267176662.

It can be written as a sum of positive squares in only one way, i.e., 248281961841 + 18389800881 = 498279^2 + 135609^2 .

It is a super-2 number, since 2×266671762722² (a number of 24 digits) contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 7407548947 + ... + 7407548982.

Almost surely, 2^266671762722 is an apocalyptic number.

266671762722 is an abundant number, since it is smaller than the sum of its proper divisors (311117056548).

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

266671762722 is a wasteful number, since it uses less digits than its factorization.

266671762722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14815097937 (or 14815097934 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 54.

The spelling of 266671762722 in words is "two hundred sixty-six billion, six hundred seventy-one million, seven hundred sixty-two thousand, seven hundred twenty-two".