266893035172 has 12 divisors (see below), whose sum is σ = 472310708940. Its totient is φ = 131947118336.

The previous prime is 266893035163. The next prime is 266893035193. The reversal of 266893035172 is 271530398662.

It can be written as a sum of positive squares in 2 ways, for example, as 89798512896 + 177094522276 = 299664^2 + 420826^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374849413 + ... + 374850124.

It is an arithmetic number, because the mean of its divisors is an integer number (39359225745).

Almost surely, 2^266893035172 is an apocalyptic number.

It is an amenable number.

266893035172 is a deficient number, since it is larger than the sum of its proper divisors (205417673768).

266893035172 is a wasteful number, since it uses less digits than its factorization.

266893035172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749699630 (or 749699628 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 266893035172 in words is "two hundred sixty-six billion, eight hundred ninety-three million, thirty-five thousand, one hundred seventy-two".