266555227253 has 24 divisors (see below), whose sum is σ = 326584473120. Its totient is φ = 216324652320.

The previous prime is 266555227249. The next prime is 266555227259. The reversal of 266555227253 is 352722555662.

It is not a de Polignac number, because 266555227253 - 2² = 266555227249 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266555227259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1530818 + ... + 1696028.

It is an arithmetic number, because the mean of its divisors is an integer number (13607686380).

Almost surely, 2^266555227253 is an apocalyptic number.

It is an amenable number.

266555227253 is a deficient number, since it is larger than the sum of its proper divisors (60029245867).

266555227253 is a wasteful number, since it uses less digits than its factorization.

266555227253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166977 (or 166970 counting only the distinct ones).

The product of its digits is 7560000, while the sum is 50.

The spelling of 266555227253 in words is "two hundred sixty-six billion, five hundred fifty-five million, two hundred twenty-seven thousand, two hundred fifty-three".