266975880960 has 144 divisors (see below), whose sum is σ = 857074496544. Its totient is φ = 70824493056.

The previous prime is 266975880923. The next prime is 266975880961. The reversal of 266975880960 is 69088579662.

266975880960 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×266975880960² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266975880891 and 266975880900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266975880961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 561004 + ... + 921236.

It is an arithmetic number, because the mean of its divisors is an integer number (5951906226).

Almost surely, 2^266975880960 is an apocalyptic number.

266975880960 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 266975880960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (428537248272).

266975880960 is an abundant number, since it is smaller than the sum of its proper divisors (590098615584).

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

266975880960 is a wasteful number, since it uses less digits than its factorization.

266975880960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360450 (or 360436 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 66.

The spelling of 266975880960 in words is "two hundred sixty-six billion, nine hundred seventy-five million, eight hundred eighty thousand, nine hundred sixty".