266423580000 has 1200 divisors, whose sum is σ = 1041635382480. Its totient is φ = 66673152000.

The previous prime is 266423579969. The next prime is 266423580013. The reversal of 266423580000 is 85324662.

266423580000 is a `hidden beast` number, since 2 + 6 + 642 + 3 + 5 + 8 + 0 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1200).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 2489939947 + ... + 2489940053.

Almost surely, 2^266423580000 is an apocalyptic number.

266423580000 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 266423580000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520817691240).

266423580000 is an abundant number, since it is smaller than the sum of its proper divisors (775211802480).

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

266423580000 is a wasteful number, since it uses less digits than its factorization.

266423580000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 266423580000 in words is "two hundred sixty-six billion, four hundred twenty-three million, five hundred eighty thousand".