266156893812 has 48 divisors (see below), whose sum is σ = 648789829632. Its totient is φ = 84822630240.

The previous prime is 266156893763. The next prime is 266156893813. The reversal of 266156893812 is 218398651662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266156893813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4279218 + ... + 4340969.

It is an arithmetic number, because the mean of its divisors is an integer number (13516454784).

Almost surely, 2^266156893812 is an apocalyptic number.

It is an amenable number.

266156893812 is an abundant number, since it is smaller than the sum of its proper divisors (382632935820).

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

266156893812 is a wasteful number, since it uses less digits than its factorization.

266156893812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620308 (or 8620306 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 57.

The spelling of 266156893812 in words is "two hundred sixty-six billion, one hundred fifty-six million, eight hundred ninety-three thousand, eight hundred twelve".