266206408688 has 40 divisors (see below), whose sum is σ = 562733149440. Its totient is φ = 120987944640.

The previous prime is 266206408673. The next prime is 266206408693. The reversal of 266206408688 is 886804602662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1400873 + ... + 1579511.

It is an arithmetic number, because the mean of its divisors is an integer number (14068328736).

Almost surely, 2^266206408688 is an apocalyptic number.

It is an amenable number.

266206408688 is an abundant number, since it is smaller than the sum of its proper divisors (296526740752).

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

266206408688 is a wasteful number, since it uses less digits than its factorization.

266206408688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187125 (or 187119 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 56.

The spelling of 266206408688 in words is "two hundred sixty-six billion, two hundred six million, four hundred eight thousand, six hundred eighty-eight".