266397684274 has 8 divisors (see below), whose sum is σ = 399761861148. Its totient is φ = 133143730560.

The previous prime is 266397684239. The next prime is 266397684277. The reversal of 266397684274 is 472486793662.

It can be written as a sum of positive squares in 2 ways, for example, as 163949678649 + 102448005625 = 404907^2 + 320075^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (266397684277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27549747 + ... + 27559414.

Almost surely, 2^266397684274 is an apocalyptic number.

266397684274 is a deficient number, since it is larger than the sum of its proper divisors (133364176874).

266397684274 is a wasteful number, since it uses less digits than its factorization.

266397684274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55111580.

The product of its digits is 146313216, while the sum is 64.

The spelling of 266397684274 in words is "two hundred sixty-six billion, three hundred ninety-seven million, six hundred eighty-four thousand, two hundred seventy-four".