266877709383012 has 384 divisors, whose sum is σ = 822756920832000. Its totient is φ = 65326509932544.

The previous prime is 266877709383011. The next prime is 266877709383017. The reversal of 266877709383012 is 210383907778662.

It is a super-2 number, since 2×266877709383012² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266877709383011) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10433456439 + ... + 10433482017.

It is an arithmetic number, because the mean of its divisors is an integer number (2142596148000).

Almost surely, 2^{266877709383012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266877709383012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411378460416000).

266877709383012 is an abundant number, since it is smaller than the sum of its proper divisors (555879211448988).

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

266877709383012 is a wasteful number, since it uses less digits than its factorization.

266877709383012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33395 (or 33393 counting only the distinct ones).

The product of its (nonzero) digits is 256048128, while the sum is 69.

The spelling of 266877709383012 in words is "two hundred sixty-six trillion, eight hundred seventy-seven billion, seven hundred nine million, three hundred eighty-three thousand, twelve".