266004550054320 has 640 divisors, whose sum is σ = 1045706670489600. Its totient is φ = 54333251850240.

The previous prime is 266004550054291. The next prime is 266004550054333. The reversal of 266004550054320 is 23450055400662.

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

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 304798422 + ... + 305669898.

It is an arithmetic number, because the mean of its divisors is an integer number (1633916672640).

Almost surely, 2^{266004550054320} is an apocalyptic number.

266004550054320 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 266004550054320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (522853335244800).

266004550054320 is an abundant number, since it is smaller than the sum of its proper divisors (779702120435280).

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

266004550054320 is a wasteful number, since it uses less digits than its factorization.

266004550054320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871793 (or 871787 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 42.

The spelling of 266004550054320 in words is "two hundred sixty-six trillion, four billion, five hundred fifty million, fifty-four thousand, three hundred twenty".