266221232134353 has 6 divisors (see below), whose sum is σ = 384541779749634. Its totient is φ = 177480821422896.

The previous prime is 266221232134349. The next prime is 266221232134367. The reversal of 266221232134353 is 353431232122662.

266221232134353 is a `hidden beast` number, since 2 + 6 + 6 + 2 + 21 + 232 + 1 + 343 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 266207385434769 + 13846699584 = 16315863^2 + 117672^2 .

It is not a de Polignac number, because 266221232134353 - 2² = 266221232134349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 266221232134299 and 266221232134308.

It is not an unprimeable number, because it can be changed into a prime (266221232134373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14790068451900 + ... + 14790068451917.

It is an arithmetic number, because the mean of its divisors is an integer number (64090296624939).

Almost surely, 2^{266221232134353} is an apocalyptic number.

It is an amenable number.

266221232134353 is a deficient number, since it is larger than the sum of its proper divisors (118320547615281).

266221232134353 is a wasteful number, since it uses less digits than its factorization.

266221232134353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29580136903823 (or 29580136903820 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 45.

The spelling of 266221232134353 in words is "two hundred sixty-six trillion, two hundred twenty-one billion, two hundred thirty-two million, one hundred thirty-four thousand, three hundred fifty-three".