266372608320 has 2520 divisors, whose sum is σ = 1281063070584. Its totient is φ = 52171112448.

The previous prime is 266372608291. The next prime is 266372608357. The reversal of 266372608320 is 23806273662.

266372608320 is a `hidden beast` number, since 2 + 6 + 6 + 3 + 7 + 2 + 608 + 32 + 0 = 666.

It can be written as a sum of positive squares in 12 ways, for example, as 103395688704 + 162976919616 = 321552^2 + 403704^2 .

It is a tau number, because it is divible by the number of its divisors (2520).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 3648939804 + ... + 3648939876.

Almost surely, 2^266372608320 is an apocalyptic number.

266372608320 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 266372608320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (640531535292).

266372608320 is an abundant number, since it is smaller than the sum of its proper divisors (1014690462264).

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

266372608320 is a wasteful number, since it uses less digits than its factorization.

266372608320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The spelling of 266372608320 in words is "two hundred sixty-six billion, three hundred seventy-two million, six hundred eight thousand, three hundred twenty".