266204854080 has 560 divisors, whose sum is σ = 1057095192384. Its totient is φ = 63030804480.

The previous prime is 266204854073. The next prime is 266204854081. The reversal of 266204854080 is 80458402662.

266204854080 is a `hidden beast` number, since 2 + 6 + 6 + 20 + 4 + 8 + 540 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266204854081) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12249304 + ... + 12271016.

Almost surely, 2^266204854080 is an apocalyptic number.

266204854080 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 266204854080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528547596192).

266204854080 is an abundant number, since it is smaller than the sum of its proper divisors (790890338304).

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

266204854080 is a wasteful number, since it uses less digits than its factorization.

266204854080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21796 (or 21777 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 266204854080 in words is "two hundred sixty-six billion, two hundred four million, eight hundred fifty-four thousand, eighty".