266226644541 has 32 divisors (see below), whose sum is σ = 419494078080. Its totient is φ = 148937942400.

The previous prime is 266226644503. The next prime is 266226644549. The reversal of 266226644541 is 145446622662.

It is a happy number.

It is not a de Polignac number, because 266226644541 - 2²² = 266222450237 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 (266226644549) 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 31 ways as a sum of consecutive naturals, for example, 1763520 + ... + 1908521.

It is an arithmetic number, because the mean of its divisors is an integer number (13109189940).

Almost surely, 2^266226644541 is an apocalyptic number.

It is an amenable number.

266226644541 is a deficient number, since it is larger than the sum of its proper divisors (153267433539).

266226644541 is a wasteful number, since it uses less digits than its factorization.

266226644541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3672094 (or 3672068 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 48.

The spelling of 266226644541 in words is "two hundred sixty-six billion, two hundred twenty-six million, six hundred forty-four thousand, five hundred forty-one".