266484897381 has 8 divisors (see below), whose sum is σ = 355408393120. Its totient is φ = 177608999952.

The previous prime is 266484897353. The next prime is 266484897391. The reversal of 266484897381 is 183798484662.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 266484897381 - 2¹⁷ = 266484766309 is a prime.

It is a super-2 number, since 2×266484897381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266484897311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11886511 + ... + 11908908.

It is an arithmetic number, because the mean of its divisors is an integer number (44426049140).

Almost surely, 2^266484897381 is an apocalyptic number.

It is an amenable number.

266484897381 is a deficient number, since it is larger than the sum of its proper divisors (88923495739).

266484897381 is a wasteful number, since it uses less digits than its factorization.

266484897381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23799155.

The product of its digits is 111476736, while the sum is 66.

The spelling of 266484897381 in words is "two hundred sixty-six billion, four hundred eighty-four million, eight hundred ninety-seven thousand, three hundred eighty-one".