266054130465660 has 144 divisors (see below), whose sum is σ = 810948469836960. Its totient is φ = 70603960573440.

The previous prime is 266054130465611. The next prime is 266054130465661. The reversal of 266054130465660 is 66564031450662.

266054130465660 is a `hidden beast` number, since 2 + 6 + 6 + 0 + 5 + 4 + 1 + 30 + 46 + 566 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 266054130465597 and 266054130465606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266054130465661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39643470 + ... + 45866250.

It is an arithmetic number, because the mean of its divisors is an integer number (5631586596090).

Almost surely, 2^{266054130465660} is an apocalyptic number.

266054130465660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266054130465660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405474234918480).

266054130465660 is an abundant number, since it is smaller than the sum of its proper divisors (544894339371300).

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

266054130465660 is a wasteful number, since it uses less digits than its factorization.

266054130465660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6223948 (or 6223943 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 54.

The spelling of 266054130465660 in words is "two hundred sixty-six trillion, fifty-four billion, one hundred thirty million, four hundred sixty-five thousand, six hundred sixty".