266405302664 has 16 divisors (see below), whose sum is σ = 504455587020. Its totient is φ = 131883812800.

The previous prime is 266405302637. The next prime is 266405302673. The reversal of 266405302664 is 466203504662.

266405302664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 228168628900 + 38236673764 = 477670^2 + 195542^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164853959 + ... + 164855574.

Almost surely, 2^266405302664 is an apocalyptic number.

It is an amenable number.

266405302664 is a deficient number, since it is larger than the sum of its proper divisors (238050284356).

266405302664 is a wasteful number, since it uses less digits than its factorization.

266405302664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329709640 (or 329709636 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 44.

The spelling of 266405302664 in words is "two hundred sixty-six billion, four hundred five million, three hundred two thousand, six hundred sixty-four".