266861702130966 has 48 divisors (see below), whose sum is σ = 591243397827264. Its totient is φ = 86952028088832.

The previous prime is 266861702130931. The next prime is 266861702130977. The reversal of 266861702130966 is 669031207168662.

266861702130966 is a `hidden beast` number, since 2 + 6 + 6 + 8 + 617 + 0 + 2 + 1 + 3 + 0 + 9 + 6 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197217435 + ... + 198565958.

It is an arithmetic number, because the mean of its divisors is an integer number (12317570788068).

Almost surely, 2^{266861702130966} is an apocalyptic number.

266861702130966 is an abundant number, since it is smaller than the sum of its proper divisors (324381695696298).

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

266861702130966 is a wasteful number, since it uses less digits than its factorization.

266861702130966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395784245 (or 395784242 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 266861702130966 in words is "two hundred sixty-six trillion, eight hundred sixty-one billion, seven hundred two million, one hundred thirty thousand, nine hundred sixty-six".