266255621346 has 64 divisors (see below), whose sum is σ = 629354105856. Its totient is φ = 74031086400.

The previous prime is 266255621327. The next prime is 266255621347. The reversal of 266255621346 is 643126552662.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 266255621295 and 266255621304.

It is not an unprimeable number, because it can be changed into a prime (266255621347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 785820 + ... + 1072391.

It is an arithmetic number, because the mean of its divisors is an integer number (9833657904).

Almost surely, 2^266255621346 is an apocalyptic number.

266255621346 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

266255621346 is an abundant number, since it is smaller than the sum of its proper divisors (363098484510).

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

266255621346 is a wasteful number, since it uses less digits than its factorization.

266255621346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858407.

The product of its digits is 3110400, while the sum is 48.

The spelling of 266255621346 in words is "two hundred sixty-six billion, two hundred fifty-five million, six hundred twenty-one thousand, three hundred forty-six".