266550041441040 has 320 divisors, whose sum is σ = 960619979243520. Its totient is φ = 59876535674880.

The previous prime is 266550041441023. The next prime is 266550041441069. The reversal of 266550041441040 is 40144140055662.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 266550041440983 and 266550041441001.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 360129745 + ... + 360869135.

It is an arithmetic number, because the mean of its divisors is an integer number (3001937435136).

Almost surely, 2^{266550041441040} is an apocalyptic number.

266550041441040 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 266550041441040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480309989621760).

266550041441040 is an abundant number, since it is smaller than the sum of its proper divisors (694069937802480).

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

266550041441040 is a wasteful number, since it uses less digits than its factorization.

266550041441040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743110 (or 743104 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 42.

The spelling of 266550041441040 in words is "two hundred sixty-six trillion, five hundred fifty billion, forty-one million, four hundred forty-one thousand, forty".