266043552233340 has 288 divisors, whose sum is σ = 883451665313280. Its totient is φ = 59624756964864.

The previous prime is 266043552233293. The next prime is 266043552233357. The reversal of 266043552233340 is 43332255340662.

It is a self number, because there is not a number n which added to its sum of digits gives 266043552233340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 245499129 + ... + 246580431.

It is an arithmetic number, because the mean of its divisors is an integer number (3067540504560).

Almost surely, 2^{266043552233340} is an apocalyptic number.

266043552233340 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 266043552233340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (441725832656640).

266043552233340 is an abundant number, since it is smaller than the sum of its proper divisors (617408113079940).

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

266043552233340 is a wasteful number, since it uses less digits than its factorization.

266043552233340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082961 (or 1082952 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 48.

The spelling of 266043552233340 in words is "two hundred sixty-six trillion, forty-three billion, five hundred fifty-two million, two hundred thirty-three thousand, three hundred forty".