266622086400 has 432 divisors, whose sum is σ = 893544934464. Its totient is φ = 70006538240.

The previous prime is 266622086399. The next prime is 266622086411. The reversal of 266622086400 is 4680226662.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 478674922 + ... + 478675478.

It is an arithmetic number, because the mean of its divisors is an integer number (2068391052).

Almost surely, 2^266622086400 is an apocalyptic number.

266622086400 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 266622086400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446772467232).

266622086400 is an abundant number, since it is smaller than the sum of its proper divisors (626922848064).

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

266622086400 is a wasteful number, since it uses less digits than its factorization.

266622086400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 266622086400 in words is "two hundred sixty-six billion, six hundred twenty-two million, eighty-six thousand, four hundred".