266458768660 has 48 divisors (see below), whose sum is σ = 639596611584. Its totient is φ = 91343639808.

The previous prime is 266458768603. The next prime is 266458768669. The reversal of 266458768660 is 66867854662.

It is a junction number, because it is equal to n+sod(n) for n = 266458768592 and 266458768601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266458768669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 821197 + ... + 1098763.

It is an arithmetic number, because the mean of its divisors is an integer number (13324929408).

Almost surely, 2^266458768660 is an apocalyptic number.

266458768660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266458768660 is an abundant number, since it is smaller than the sum of its proper divisors (373137842924).

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

266458768660 is a wasteful number, since it uses less digits than its factorization.

266458768660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284440 (or 284438 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 64.

The spelling of 266458768660 in words is "two hundred sixty-six billion, four hundred fifty-eight million, seven hundred sixty-eight thousand, six hundred sixty".